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Paul Graham Paul Graham

Paul Graham (b. 1964) is a Lisp programmer and essayist. He is the author of On Lisp (1993), ANSI Common Lisp (1995), and Hackers & Painters (2004).

In 1995 Graham and Robert Morris founded Viaweb, the first Application service provider. Viaweb's software (written largely in Common Lisp) let users make their own Internet stores. In the summer of 1998 Viaweb was sold to Yahoo! for 455,000 shares of Yahoo! stock, valued at $49.6 million. [1] At Yahoo! the product became Yahoo! Store.

He has since begun writing essays for his popular website paulgraham.com. They range from "Beating the Averages", which compares Lisp to other programming languages, to "Why Nerds are Unpopular", a discussion of nerd life in high school. A collection of his essays has been published as Hackers and Painters (ISBN 0596006624) by O'Reilly.

He is also working on Arc, a new Lisp dialect. It is discussed in his essay The Hundred-Year Language, among others. As part of his work on Arc, he began developing an email client and decided it needed a good spam filter. The simplified naive Bayes classifier he described in "A Plan for Spam" inspired the current generation of probabilistic spam filters.

In 2005, after giving a talk at the Harvard Computer Society later published as How to Start a Startup, Graham along with Trevor Blackwell, Jessica Livingston and Robert Morris started Y Combinator to provide seed funding to startups, particularly those started by younger, more technically-oriented founders. Among the teams accepted into the first year's program was one including Aaron Swartz, a Stanford University student and noted teenage programmer.

Graham has an A.B. from Cornell and a Ph.D. in computer science from Harvard, and studied painting at Rhode Island School of Design and the Accademia di Belle Arti in Florence.

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