No matter how long you have been knitting, it is impossible to count to 25 in the dark.
Especially if you are drinking hoppy ale.
This is especially true if you only have to do said count one time and it will effect the entire outcome of the object.
Addendum to Rule 1:
Waiting to work on the object until SnB at the bar is not a wise choice. You will not notice that the count is off until the next day when you realize you are now ready for another drink because you have to frog the "quick-knit" hat.