"When he created ?Git,? the software source control and
collaboration system that runs Linux kernel development, he started
writing code on a Sunday (April 3, 2005) and emerged just a few
days later with a new revision control system that today is
regarded as one of the best pieces of software ever written
(second, at least, to Linux, of course).
Andrew Morton said when introducing Linus to speak about Git to
an audience at Google, Git is ?expressly designed to make you feel
less intelligent than you thought you were.?