the deadline

Yesterday we had an important deadline. To meet it we switched into "work-only mode" with increasing working times. Unwanted. Example? If the deadline is Friday and you find discover that your theory is wrong (Friday morning, 1:30 a.m.) you have to rewrite the paper and your code. Resulting in 20 minutes sleep that nigth in which I found the answer to the problem. That was luck! Anyway, now I'm back in "normal mode", which is probably better for health and stuff. Next deadline is in 2 weeks...