Welcome to Michael Hartl's Home on the Web! You found your way here—you might as well stay a while. I wear several different hats, and if you poke around this site you'll get to know about a few of them.
These days I mainly work as a computer programmer and entrepreneur. I'm currently working on Ruby on Rails Tutorial: Learn Rails by Example, a project to make the Ruby on Rails Tutorial book and Rails tutorial screencasts. I am also the founder of Tau Day and author of the Tau Manifesto, which argues that "No, really, pi is wrong." Previously, I taught and studied theoretical physics at Caltech.
The rest of this site has some more about me, including a little about movies I like and my interest in music. You should follow me on Twitter here.