Algorithms in History算法的社会史
Every algorithm was written by someone, somewhere, for a reason. This timeline follows about 120 of them from Egyptian scribes to diffusion models: when each appeared, what social force pushed it into being — taxes, wars, trade, telephones, the Web — what it was first used for, and the fields it later spread to.
每一个算法都是某人、在某地、出于某种原因写下的。这条时间线追溯了约 120 个算法，从古埃及书吏到扩散模型：它们何时出现，是什么社会力量推动它们诞生——赋税、战争、贸易、电话、互联网——最初用来做什么，后来又扩展到哪些领域。
Time runs left to right. Each line joins two related algorithms — one built on, rediscovered or combined with the other — and runs from the earlier to the later. Click an algorithm to light up everything it built on and everything that built on it; the chain is listed below in date order. Scroll sideways, or jump to an era.
时间从左到右。每条线连接两个相关的算法——一个建立在另一个之上、重新发现了它、或与它结合使用——由较早的指向较晚的。点击一个算法，会点亮它所依赖的全部前身和建立在它之上的全部后继，并在下方按时间顺序列出这条链。可左右滚动，或直接跳到某个时代。
Each column is one algorithm. A filled dot marks the field it was invented for; rings mark fields it later spread to. Colour is its main social driver. The time axis is stretched after 1950, where most algorithms are. Click a column for details.
每一列是一个算法。实心点表示它最初服务的领域，空心圈表示后来扩展到的领域，颜色表示主要的社会驱动力。1950 年之后算法最密集，时间轴在那里被拉长。点击一列查看详情。
first used in最初应用spread to扩展至