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What is the emblem?

The graphic at the top of the page is called a glider. It's a pattern from a mathematical simulation called the Game of Life. In this simulation, very simple rules about the behavior of dots on a grid give rise to wonderfully complex emergent phenomena. The glider is the simplest Life pattern that moves, and the most instantly recognizable of all Life patterns.

Why have an emblem at all?

To some hackers, having an emblem might smack too much of groupthink. But the hacker community is, in fact, a community, knit together by trust bonds over the Internet. One thing we've learned since 1991 is that visible emblems of community are just as valuable to hackers as they are to other kind of human beings. They help us recognize each other, help us affirm common values and cooperate more closely. They're useful social engineering.

Using this emblem means something a little different from just presenting yourself as a Linux fan, or a Perl-monger, or a member of any of the hacker subtribes that have become so successful since the mid-1990s. These are relatively recent developments in a tradition that goes back decades. Back to the homewbrew microcomputer experimenters of the early 1970s; the earliest Unix developers and ARPANET engineers in 1969; and to the SPACEWAR hackers at MIT in 1961.

The hackers, in the broadest sense, are the people who built the Internet, and Unix, and the World Wide Web; our dreams of freedom have changed the world everybody lives in. See How To Become A Hacker for an in-depth look at what that means. If you find yourself nodding in agreement as you read that document, you are one of the people who should be using this emblem.

Why this emblem?

The glider is an appropriate emblem on many levels. Start with history: the Game of Life was first publicly described in Scientific American in 1970. It was born at almost the same time as the Internet and Unix. It has fascinated hackers ever since.

In the Game of Life, simple rules of cooperation with what's nearby lead to unexpected, even startling complexities that you could not have predicted from the rules (emergent phenomena). This is a neat parallel to the way that startling and unexpected phenomena like open-source development emerge in the hacker community.

The glider fulfils the criteria for a good logo. It's simple, bold, hard to mistake for anything else, and easy to print on a mug or T-shirt. It could be varied, combined with other emblems, or modified and infinitely repeated for use as a background.

But what if the wrong people start using it?

A lot of people think this emblem will become worse than useless because script kiddies, crackers and wannabes will be the predominant ones to use it. Yes, that is a risk — but other emblems, like the peace sign or the A-for-anarchy, that have similar risks have retained a lot of utility. If it helps, I've gotten a lot of email from people picking up on it that I know to be hard-core hackers, and I've seen almost no abuse of it.

Will you carry my slightly different idea for an emblem?

Probably not. Part of the point of an emblem like this is instant recognizability. That goal is compromised if there is a lot of variation among the instances. The two most common suggestions are to remove the grid or change the orientation of the glider. Perhaps these variants might have been better, or there is some other idea that would have been superior, but the benefit of having one emblem means it would be a bad idea to switch now that this one has a following. I will carry only images in which the plain-vanilla graphic at the top of this page is clearly recognizable.

Why from you?

Because I maintain the How To Become A Hacker document, A Brief History of Hackerdom, the Jargon File, and am more or less the hackers' resident historian/anthropologist. It's my job to think of these things, if it's anybody's.



The Linux folks have their penguin and the BSDers their daemon. Perl's got a camel, FSF fans have their gnu and OSI's got an open-source logo. What we haven't had, historically, is an emblem that represents the entire hacker community of which all these groups are parts. This is a proposal that we adopt one — the glider pattern from the Game of Life.

About half the hackers this idea was alpha-tested on instantaneously said "Wow! Cool!" without needing any further explanation. If you don't know what a glider is, or why it would make a good emblem, or if you're dubious about having an emblem at all, read the FAQs page.

I first proposed this emblem in October 2003. It has since entered fairly widespread use, as you can see by the number of international translations over on the left. Not universal, because many hackers object on principle to the idea of having an emblem at all, but it appears to be a successful meme.

What will I be saying if I display it?

When you put the glider emblem on your web page, or wear it on clothing, or display it in some other way, you are visibly associating yourself with the hacker culture. This is not quite the same thing as claiming to be a hacker yourself — that is a title of honor that generally has to be conferred by others rather than self-assumed. But by using this emblem, you express sympathy with hackers' goals, hackers' values, and the hacker way of living. See the FAQs page for further discussion.

Yes, as of a mere four days after this proposal was floated, there are mugs and T-shirts. Please note that I had nothing to do with this and I'm not getting a cut; in fact, proceeds are going to the Electronic Frontier Foundation. Now there's a second source with different designs.

Who should not use this emblem?

If you think hacking is about breaking into other peoples' computers, those of us the emblem was invented for do not want you displaying it. Go invent your own emblem, cracker. We'll find some way to shame and reject you publicly if you mess with ours.

I used to have a prohibition against commercial use here. A number of people have argued convincingly that this is impractical and perhaps unfair. But keep it tasteful, or you will be flamed.

How can I use it?

The glider is not copyrighted or trademarked. The recommended way to use it is on a web page, with an image and a link back to either this page or direct to How To Become A Hacker. Here is a snippet of XHTML you can paste into a page.

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