Yesterday I sat down and started programming around 2pm. Er... Two days ago, really. It took me a few hours to get into it (always takes a few hours for me to really get into a project, especially when it's adding functionality to something that already exists). And then I kept going. And going. Around 9am I drove into work, and was mostly useless... I could do really minor tweaks, hold simple conversations... but my mind would wander unbelievably; reality would even fade in and out.
I've done much worse in the terms of allnighters, but I really am getting "old" in that sense, so it seems. Though maybe I'm just "out of practice" -- a hard call. Last night I slept for eleven hours and it felt good. Today I seem no worse for the wear other than a bit distractable, maybe a bit irritable.
So much to do, just one life to do it in...