A geek with a hat (2011):

This is why programmers are so annoyed when you distract them.

Because of this huge mental investment, we simply can’t start working until we can expect a couple of hours without being distracted. It’s just not worth constructing the whole model in your head and then having it torn down half an hour later.

Das Tolle an Freitag/Samstag Abenden, wenn man nicht ausgeht.