I prefer to edit on paper rather than on the screen, so after every round of editing I print a new copy and go through it all over again. This is a stack of some pre-production notes, 10 editing passes, 2 printer tests, 2 print proofs and 1 MOSTLY final copy. I found typos and mistakes in pass #10 that had been there since the first print!!! Now, do we want to make a bet on how many typos you find?? I'll give an over-under 3... my bet is on over LOL
UPSIDE: I have LOTS of scratch paper!! Believe me, it will get used!