ch03.txt

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.bookmark zeromq
+ The ZeroMQ Community

People sometimes ask me what's so special about ZeroMQ. My standard answer is that ZeroMQ is arguably the best answer we have to the vexing question of "How do we make the distributed software that the 21st century demands?" But more than that, ZeroMQ is special because of its community. This is ultimately what separates the wolves from the sheep.

There are three main open source patterns. The first is the large firm dumping code to break the market for others. This is the Apache Foundation model. The second is tiny teams or small firms building their dream. This is the most common open source model, which can be very successful commercially. The last is aggressive and diverse communities that swarm over a problem landscape. This is the Linux model, and the one to which we aspire with ZeroMQ.

It's hard to overemphasize the power and persistence of a working open source community. There really does not seem to be a better way of making software for the long term. Not only does the community choose the best problems to solve, it solves them minimally, carefully, and it then looks after these answers for years, decades, until they're no longer relevant, and then it quietly puts them away.

To really benefit from ZeroMQ, you need to understand the community. At some point down the road you'll want to submit a patch, an issue, or an add-on. You might want to ask someone for help. You will probably want to bet a part of your business on ZeroMQ, and when I tell you that the community is much, much more important than the company that backs the product, even though I'm CEO of that company, this should be significant.

In this section I'm going to look at our community from several angles and conclude by explaining in detail our contract for collaboration, which [http://rfc.zeromq.org/spec:42 we call "C4"]. You should find the discussion useful for your own work. We've also adapted the ZeroMQ C4 process for closed source projects with good success.

++ Architecture of the ZeroMQ Community

You know that ZeroMQ is an LGPL-licensed project (author's note: we are moving towards the Mozilla Public License v2, which has the same effect yet is simpler). In fact it's a collection of projects, built around the core library, {{libzmq}}. I'll visualize these projects as an expanding galaxy:

* At the core, {{libzmq}} is the ZeroMQ core library. It's written in C++, with a low-level C API. The code is nasty, mainly because it's highly optimized but also because it's written in C++, a language that lends itself to subtle and deep nastiness. Martin Sustrik wrote the bulk of the original code. Today it has dozens of people who maintain different parts of it.

* Around {{libzmq}}, there are about 50 //bindings//. These are individual projects that create higher-level APIs for ZeroMQ, or at least map the low-level API into other languages. The bindings vary in quality from experimental to utterly awesome. Probably the most impressive binding is [https://github.com/zeromq/pyzmq PyZMQ], which was one of the first community projects on top of ZeroMQ. If you are a binding author, you should really study PyZMQ and aspire to making your code and community as great.

* A lot of languages have multiple bindings (Erlang, Ruby, C#, at least) written by different people over time, or taking varying approaches. We don't regulate these in any way. There are no "official" bindings. You vote by using one or the other, contributing to it, or ignoring it.

* There are a series of reimplementations of {{libzmq}}, starting with JeroMQ, a full Java translation of the library, which is now the basis for NetMQ, a C# stack. These native stacks offer similar or identical APIs, and speak the same protocol (ZMTP) as {{libzmq}}.

* On top of the bindings are thousands of projects that use ZeroMQ or build on it. Some of these like Zyre and Malamute are part of the "official" community, most are not.

{{Libzmq}}, most of the bindings, and some of the outer projects sit in the [https://github.com/organizations/zeromq ZeroMQ community "organization"] on GitHub. This organization is "run" by a group consisting of the most senior binding authors. There's very little to run as it's almost all self-managing and there's zero conflict these days.

iMatix, my firm, plays a specific role in the community. We own the trademarks and enforce them discretely in order to make sure that if you download a package calling itself "ZeroMQ", you can trust what you are getting. People have on rare occasion tried to hijack the name, maybe believing that "free software" means there is no property at stake and no one willing to defend it. One thing you'll understand from this article is how seriously we take the process behind our software (and I mean "us" as a community, not a company). iMatix backs the community by enforcing that process on anything calling itself "ZeroMQ" or "ZeroMQ". We also put money and time into the software and packaging for reasons I'll explain later.

It is not a charity exercise. ZeroMQ is a for-profit project, and a very profitable one. The profits are widely distributed among all those who invest in it. It's really that simple: take the time to become an expert in ZeroMQ, or build something useful on top of ZeroMQ, and you'll find your value as an individual, or team, or company increasing. iMatix enjoys the same benefits as everyone else in the community. It's win-win to everyone except our competitors, who find themselves facing a threat they can't beat and can't really escape. ZeroMQ dominates the future world of massively distributed software.

My firm doesn't just have the community's back--we also built the community. This was deliberate work; in the original ZeroMQ white paper from 2007, there were two projects. One was technical, how to make a better messaging system. The second was how to build a community that could take the software to dominant success. Software dies, but community survives.

++ How to Make Really Large Architectures

There are, it has been said (at least by people reading this sentence out loud), two ways to make really large-scale software. Option One is to throw massive amounts of money and problems at empires of smart people, and hope that what emerges is not yet another career killer. If you're very lucky and are building on lots of experience, have kept your teams solid, and are not aiming for technical brilliance, and are furthermore incredibly lucky, it works.

But gambling with hundreds of millions of others' money isn't for everyone. For the rest of us who want to build large-scale software, there's Option Two, which is open source, and more specifically, //free software//. If you're asking how the choice of software license is relevant to the scale of the software you build, that's the right question.

The brilliant and visionary Eben Moglen once said, roughly, that a free software license is the contract on which a community builds. When I heard this, about ten years ago, the idea came to me--//Can we deliberately grow free software communities//?

Ten years later, the answer is "yes", and there is almost a science to it. I say "almost" because we don't yet have enough evidence of people doing this deliberately with a documented, reproducible process. It is what I'm trying to do with [http://cultureandempire.com/cande.html#/4/6 Social Architecture]. ZeroMQ came after Wikidot, after the [http://www.digistan.org Digital Standards Organization] (Digistan) and after the [http://www.ffii.org Foundation for a Free Information Infrastructure] (aka the FFII, an NGO that fights against software patents). This all came after a lot of less successful community projects like Xitami and Libero. My main takeaway from a long career of projects of every conceivable format is: if you want to build truly large-scale and long-lasting software, aim to build a free software community.

++ Psychology of Software Architecture

Dirkjan Ochtman pointed me to [http://en.wikipedia.org/wiki/Software_architecture Wikipedia's definition of Software Architecture] as "the set of structures needed to reason about the system, which comprise software elements, relations among them, and properties of both". For me this vapid and circular jargon is a good example of how miserably little we understand what actually makes a successful large scale software architecture.

Architecture is the art and science of making large artificial structures for human use. If there is one thing I've learned and applied successfully in 30 years of making larger and larger software systems, it is this: //software is about people//. Large structures in themselves are meaningless. It's how they function for //human use// that matters. And in software, human use starts with the programmers who make the software itself.

The core problems in software architecture are driven by human psychology, not technology. There are many ways our psychology affects our work. I could point to the way teams seem to get stupider as they get larger or when they have to work across larger distances. Does that mean the smaller the team, the more effective? How then does a large global community like ZeroMQ manage to work successfully?

The ZeroMQ community wasn't accidental. It was a deliberate design, my contribution to the early days when the code came out of a cellar in Bratislava. The design was based on my pet science of "Social Architecture", which [http://en.wikipedia.org/wiki/Social_architecture Wikipedia defines] as "the conscious design of an environment that encourages a desired range of social behaviors leading towards some goal or set of goals." I define this as more specifically as "the process, and the product, of planning, designing, and growing an online community."

One of the tenets of Social Architecture is that //how we organize// is more significant than //who we are//. The same group, organized differently, can produce wholly different results. We are like peers in a ZeroMQ network, and our communication patterns have a dramatic impact on our performance. Ordinary people, well connected, can far outperform a team of experts using poor patterns. If you're the architect of a larger ZeroMQ application, you're going to have to help others find the right patterns for working together. Do this right, and your project can succeed. Do it wrong, and your project will fail.

The two most important psychological elements are that we're really bad at understanding complexity and that we are so good at working together to divide and conquer large problems. We're highly social apes, and kind of smart, but only in the right kind of crowd.

So here is my short list of the Psychological Elements of Software Architecture:

* **Stupidity**: our mental bandwidth is limited, so we're all stupid at some point. The architecture has to be simple to understand. This is the number one rule: simplicity beats functionality, every single time. If you can't understand an architecture on a cold gray Monday morning before coffee, it is too complex.

* **Selfishness**: we act only out of self-interest, so the architecture must create space and opportunity for selfish acts that benefit the whole. Selfishness is often indirect and subtle. For example, I'll spend hours helping someone else understand something because that could be worth days to me later.

* **Laziness**: we make lots of assumptions, many of which are wrong. We are happiest when we can spend the least effort to get a result or to test an assumption quickly, so the architecture has to make this possible. Specifically, that means it must be simple.

* **Jealousy**: we're jealous of others, which means we'll overcome our stupidity and laziness to prove others wrong and beat them in competition. The architecture thus has to create space for public competition based on fair rules that anyone can understand.

* **Fear**: we're unwilling to take risks, especially if it makes us look stupid. Fear of failure is a major reason people conform and follow the group in mass stupidity. The architecture should make silent experimentation easy and cheap, giving people opportunity for success without punishing failure.

* **Reciprocity**: we'll pay extra in terms of hard work, even money, to punish cheats and enforce fair rules. The architecture should be heavily rule-based, telling people how to work together, but not what to work on.

* **Conformity**: we're happiest to conform, out of fear and laziness, which means if the patterns are good, clearly explained and documented, and fairly enforced, we'll naturally choose the right path every time.

* **Pride**: we're intensely aware of our social status, and we'll work hard to avoid looking stupid or incompetent in public. The architecture has to make sure every piece we make has our name on it, so we'll have sleepless nights stressing about what others will say about our work.

* **Greed**: we're ultimately economic animals (see selfishness), so the architecture has to give us economic incentive to invest in making it happen. Maybe it's polishing our reputation as experts, maybe it's literally making money from some skill or component. It doesn't matter what it is, but there must be economic incentive. Think of architecture as a market place, not an engineering design.

These strategies work on a large scale but also on a small scale, within an organization or team.

++ The Importance of Contracts

Let me discuss a contentious but important area, which is what license to choose. I'll say "BSD" to cover MIT, X11, BSD, Apache, and similar licenses, and "GPL" to cover GPLv3, LGPLv3, and AGPLv3. The significant difference is the obligation to share back any forked versions, which prevents any entity from capturing the software, and thus keeps it "free".

A software license isn't technically a contract since you don't sign anything. But broadly, calling it a contract is useful since it takes the obligations of each party, and makes them legally enforceable in court, under copyright law.

You might ask, why do we need contracts at all to make open source? Surely it's all about decency, goodwill, people working together for selfless motives. Surely the principle of "less is more" applies here of all places? Don't more rules mean less freedom? Do we really need lawyers to tell us how to work together? It seems cynical and even counter-productive to force a restrictive set of rules on the happy communes of free and open source software.

But the truth about human nature is not that pretty. We're not really angels, nor devils, just self-interested winners descended from a billion-year unbroken line of winners. In business, marriage, and collective works, sooner or later, we either stop caring, or we fight and we argue.

Put this another way: a collective work has two extreme outcomes. Either it's a failure, irrelevant, and worthless, in which case every sane person walks away, without a fight. Or, it's a success, relevant, and valuable, in which case we start jockeying for power, control, and often, money.

What a well-written contract does is to protect those valuable relationships from conflict. A marriage where the terms of divorce are clearly agreed up-front is much less likely to end in divorce. A business deal where both parties agree how to resolve various classic conflicts--such as one party stealing the others' clients or staff--is much less likely to end in conflict.

Similarly, a software project that has a well-written contract that defines the terms of breakup clearly is much less likely to end in breakup. The alternative seems to be to immerse the project into a larger organization that can assert pressure on teams to work together (or lose the backing and branding of the organization). This is for example how the Apache Foundation works. In my experience organization building has its own costs, and ends up favoring wealthier participants (who can afford those sometimes huge costs).

In an open source or free software project, breakup usually takes the form of a fork, where the community splits into two or more groups, each with different visions of the future. During the honeymoon period of a project, which can last years, there's no question of a breakup. It is as a project begins to be worth money, or as the main authors start to burn out, that the goodwill and generosity tends to dry up.

So when discussing software licenses, for the code you write or the code you use, a little cynicism helps. Ask yourself, not "which license will attract more contributors?" because the answer to that lies in the mission statement and contribution process. Ask yourself, "if this project had a big fight, and split three ways, which license would save us?" Or, "if the whole team was bought by a hostile firm that wanted to turn this code into a proprietary product, which license would save us?"

Long-term survival means enduring the bad times, as well as enjoying the good ones.

When BSD projects fork, they cannot easily merge again. Indeed, one-way forking of BSD projects is quite systematic: every time BSD code ends up in a commercial project, this is what's happened. When GPL projects fork, however, re-merging is trivial.

The GPL's story is relevant here. Though communities of programmers sharing their code openly were already significant by the 1980's, they tended to use minimal licenses that worked as long as no real money got involved. There was an important language stack called Emacs, originally built in Lisp by Richard Stallman. Another programmer, James Gosling (who later gave us Java), rewrote Emacs in C with the help of many contributors, on the assumption that it would be open. Stallman got that code and used it as the basis for his own C version. Gosling then sold the code to a firm which turned around and blocked anyone distributing a competing product. Stallman found this sale of the common work hugely unethical, and began developing a reusable license that would protect communities from this.

What eventually emerged was the GNU General Public License, which used traditional copyright to force remixability. It was a neat hack that spread to other domains, for instance the Creative Commons for photography and music. In 2007, we saw version 3 of the license, which was a response to belated attacks from Microsoft and others on the concept. It has become a long and complex document but corporate copyright lawyers have become familiar with it and in my experience, few companies mind using GPL software and libraries, so long as the boundaries are clearly defined.

Thus, a good contract--and I consider the modern GPL to be the best for software--lets programmers work together without upfront agreements, organizations, or assumptions of decency and goodwill. It makes it cheaper to collaborate, and turns conflict into healthy competition. GPL doesn't just define what happens with a fork, it actively encourages forks as a tool for experimentation and learning. Whereas a fork can kill a project with a "more liberal" license, GPL projects thrive on forks since successful experiments can, by contract, be remixed back into the mainstream.

Yes, there are many thriving BSD projects and many dead GPL ones. It's always wrong to generalize. A project will thrive or die for many reasons. However, in a competitive sport, one needs every advantage.

The other important part of the BSD vs. GPL story is what I call "leakage", which is the effect of pouring water into a pot with a small but real hole in the bottom.

++ Eat Me

Here is a story. It happened to the eldest brother-in-law of the cousin of a friend of mine's colleague at work. His name was, and still is, Patrick.

Patrick was a computer scientist with a PhD in advanced network topologies. He spent two years and his savings building a new product, and choose the BSD license because he believed that would get him more adoption. He worked in his attic, at great personal cost, and proudly published his work. People applauded, for it was truly fantastic, and his mailing lists were soon abuzz with activity and patches and happy chatter. Many companies told him how they were saving millions using his work. Some of them even paid him for consultancy and training. He was invited to speak at conferences and started collecting badges with his name on them. He started a small business, hired a friend to work with him, and dreamed of making it big.

Then one day, someone pointed him to a new project, GPL licensed, which had forked his work and was improving on it. He was irritated and upset, and asked how people--fellow open sourcers, no less!--would so shamelessly steal his code. There were long arguments on the list about whether it was even legal to relicense their BSD code as GPL code. Turned out, it was. He tried to ignore the new project, but then he soon realized that new patches coming from that project //couldn't even be merged back// into his work!

Worse, the GPL project got popular and some of his core contributors made first small, and then larger patches to it. Again, he couldn't use those changes, and he felt abandoned. Patrick went into a depression, his girlfriend left him for an international currency dealer called, weirdly, Patrice, and he stopped all work on the project. He felt betrayed, and utterly miserable. He fired his friend, who took it rather badly and told everyone that Patrick was a closet banjo player. Finally, Patrick took a job as a project manager for a cloud company, and by the age of forty, he had stopped programming even for fun.

Poor Patrick. I almost felt sorry for him. Then I asked him, "Why didn't you choose the GPL?" "Because it's a restrictive viral license", he replied. I told him, "You may have a PhD, and you may be the eldest brother-in-law of the cousin of a friend of my colleague, but you are an idiot and Monique was smart to leave you. You published your work inviting people to please steal your code as long as they kept this 'please steal my code' statement in the resulting work", and when people did exactly that, you got upset. Worse, you were a hypocrite because when they did it in secret, you were happy, but when they did it openly, you felt betrayed."

Seeing your hard work captured by a smarter team and then used against you is enormously painful, so why even make that possible? Every proprietary project that uses BSD code is capturing it. A public GPL fork is perhaps more humiliating, but it's fully self-inflicted.

BSD is like food. It literally (and I mean that metaphorically) whispers "eat me" in the little voice one imagines a cube of cheese might use when it's sitting next to an empty bottle of the best beer in the world, which is of course Orval, brewed by an ancient and almost extinct order of silent Belgian monks called //Les Gars Labas Qui Fabrique l'Orval//. The BSD license, like its near clone MIT/X11, was designed specifically by a university (Berkeley) with no profit motive to leak work and effort. It is a way to push subsidized technology at below its cost price, a dumping of under-priced code in the hope that it will break the market for others. BSD is an //excellent// strategic tool, but only if you're a large well-funded institution that can afford to use Option One. The Apache license is BSD in a suit.

For us small businesses who aim our investments like precious bullets, leaking work and effort is unacceptable. Breaking the market is great, but we cannot afford to subsidize our competitors. The BSD networking stack ended up putting Windows on the Internet. We cannot afford battles with those we should naturally be allies with. We cannot afford to make fundamental business errors because in the end, that means we have to fire people.

It comes down to behavioral economics and game theory. //The license we choose modifies the economics of those who use our work//. In the software industry, there are friends, foes, and food. BSD makes most people see us as lunch. Closed source makes most people see us as enemies (do you //like// paying people for software?) GPL, however, makes most people, with the exception of the Patricks of the world, our allies. Any fork of ZeroMQ is license compatible with ZeroMQ, to the point where we //encourage// forks as a valuable tool for experimentation. Yes, it can be weird to see someone try to run off with the ball but here's the secret, //I can get it back any time I want.//

++ The Process

If you've accepted my thesis up to now, great! Now, I'll explain the rough process by which we actually build an open source community. This was how we built or grew or gently steered the ZeroMQ community into existence.

Your goal as leader of a community is to motivate people to get out there and explore; to ensure they can do so safely and without disturbing others; to reward them when they make successful discoveries; and to ensure they share their knowledge with everyone else (and not because we ask them, not because they feel generous, but because it's The Law).

It is an iterative process. You make a small product, at your own cost, but in public view. You then build a small community around that product. If you have a small but real hit, the community then helps design and build the next version, and grows larger. And then that community builds the next version, and so on. It's evident that you remain part of the community, maybe even a majority contributor, but the more control you try to assert over the material results, the less people will want to participate. Plan your own retirement well before someone decides you are their next problem.

++ Crazy, Beautiful, and Easy

You need a goal that's crazy and simple enough to get people out of bed in the morning. Your community has to attract the very best people and that demands something special. With ZeroMQ, we said we were going to make "the Fastest. Messaging. Ever.", which qualifies as a good motivator. If we'd said, we're going to make "a smart transport layer that'll connect your moving pieces cheaply and flexibly across your enterprise", we'd have failed.

Then your work must be beautiful, immediately useful, and attractive. Your contributors are users who want to explore just a little beyond where they are now. Make it simple, elegant, and brutally clean. The experience when people run or use your work should be an emotional one. They should //feel// something, and if you accurately solved even just one big problem that until then they didn't quite realize they faced, you'll have a small part of their soul.

It must be easy to understand, use, and join. Too many projects have barriers to access: put yourself in the other person's mind and see all the reasons they come to your site, thinking "Um, interesting project, but..." and then leave. You want them to stay and try it, just once. Use GitHub and put the issue tracker right there.

If you do these things well, your community will be smart but more importantly, it will be intellectually and geographically diverse. This is really important. A group of like-minded experts cannot explore the problem landscape well. They tend to make big mistakes. Diversity beats education any time.

++ Stranger, Meet Stranger

How much up-front agreement do two people need to work together on something? In most organizations, a lot. But you can bring this cost down to near-zero, and then people can collaborate without having ever met, done a phone conference, meeting, or business trip to discuss Roles and Responsibilities over way too many bottles of cheap Korean rice wine.

You need well-written rules that are designed by cynical people like me to force strangers into mutually beneficial collaboration instead of conflict. The GPL is a good start. GitHub and its fork/merge strategy is a good follow-up. And then you want something like our [http://rfc.zeromq.org/spec:42 C4 rulebook] to control how work actually happens.

C4 (which I now use for every new open source project) has detailed and tested answers to a lot of common mistakes people make, such as the sin of working offline in a corner with others "because it's faster". Transparency is essential to get trust, which is essential to get scale. By forcing every single change through a single transparent process, you build real trust in the results.

Another cardinal sin that many open source developers make is to place themselves above others. "I founded this project thus my intellect is superior to that of others". It's not just immodest and rude, and usually inaccurate, it's also poor business. The rules must apply equally to everyone, without distinction. You are part of the community. Your job, as founder of a project, is not to impose your vision of the product over others, but to make sure the rules are good, honest, and //enforced//.

++ Infinite Property

One of the saddest myths of the knowledge business is that ideas are a sensible form of property. It's medieval nonsense that should have been junked along with slavery, but sadly it's still making too many powerful people too much money.

Ideas are cheap. What does work sensibly as property is the hard work we do in building a market. "You eat what you kill" is the right model for encouraging people to work hard. Whether it's moral authority over a project, money from consulting, or the sale of a trademark to some large, rich firm: if you make it, you own it. But what you really own is "footfall", participants in your project, which ultimately defines your power.

To do this requires infinite free space. Thankfully, GitHub solved this problem for us, for which I will die a grateful person (there are many reasons to be grateful in life, which I won't list here because we only have a hundred or so pages left, but this is one of them).

You cannot scale a single project with many owners like you can scale a collection of many small projects, each with fewer owners. When we embrace forks, a person can become an "owner" with a single click. Now they just have to convince others to join by demonstrating their unique value.

So in ZeroMQ, we aimed to make it easy to write bindings on top of the core library, and we stopped trying to make those bindings ourselves. This created space for others to make those, become their owners, and get that credit.

++ Care and Feeding

I wish a community could be 100% self-steering, and perhaps one day this will work, but today it's not the case. We're very close with ZeroMQ, but from my experience a community needs four types of care and feeding:

* First, simply because most people are too nice, we need some kind of symbolic leadership or owners who provide ultimate authority in case of conflict. Usually it's the founders of the community. I've seen it work with self-elected groups of "elders", but old men like to talk a lot. I've seen communities split over the question "who is in charge?", and setting up legal entities with boards and such seems to make arguments over control worse, not better. Maybe because there seems to be more to fight over. One of the real benefits of free software is that it's always remixable, so instead of fighting over a pie, one simply forks the pie.

* Second, communities need living rules, and thus they need a lawyer able to formulate and write these down. Rules are critical; when done right, they remove friction. When done wrong, or neglected, we see real friction and argument that can drive away the nice majority, leaving the argumentative core in charge of the burning house. One thing I've tried to do with the ZeroMQ and previous communities is create reusable rules, which perhaps means we don't need lawyers as much.

* Thirdly, communities need some kind of financial backing. This is the jagged rock that breaks most ships. If you starve a community, it becomes more creative but the core contributors burn out. If you pour too much money into it, you attract the professionals, who never say "no", and the community loses its diversity and creativity. If you create a fund for people to share, they will fight (bitterly) over it. With ZeroMQ, we (iMatix) spend our time and money on marketing and packaging (like this book), and the basic care, like bug fixes, releases, and websites.

* Lastly, sales and commercial mediation are important. There is a natural market between expert contributors and customers, but both are somewhat incompetent at talking to each other. Customers assume that support is free or very cheap because the software is free. Contributors are shy at asking a fair rate for their work. It makes for a difficult market. A growing part of my work and my firm's profits is simply connecting ZeroMQ users who want help with experts from the community able to provide it, and ensuring both sides are happy with the results.

I've seen communities of brilliant people with noble goals dying because the founders got some or all of these four things wrong. The core problem is that you can't expect consistently great leadership from any one company, person, or group. What works today often won't work tomorrow, yet structures become more solid, not more flexible, over time.

The best answer I can find is a mix of two things. One, the GPL and its guarantee of remixability. No matter how bad the authority, no matter how much they try to privatize and capture the community's work, if it's GPL licensed, that work can walk away and find a better authority. Before you say, "all open source offers this," think it through. I can kill a BSD-licensed project by hiring the core contributors and not releasing any new patches. But even with a billion of dollars, I //cannot// kill a GPL-licensed project. Two, the philosophical anarchist model of authority, which is that we choose it, it does not own us.