Since at least 2005[1] part-time and 2012-ish full-time: https://tirania.org/blog/archive/2013/Mar-05.html https://tirania.org/blog/archive/2013/Mar-05.html 1.

Since at least 2005[1] part-time and 2012-ish full-time: https://tirania.org/blog/archive/2013/Mar-05.html https://tirania.org/blog/archive/2013/Mar-05.html 1. I saw him at a conference in the mid-2000s using a Mac.