"We’ve got to go from zero to done in six weeks"

This is my personal pet peeve. There is the iron triangle at work again, and when one of its points is fixed you still have two others to adjust, which seems to be forgotten here. Zawinski is trying to keep the scope (i.e. what defines the "done") and is sacrificing quality; he should instead try to make his life easier by reducing both a little bit rather than cutting just one to the bone.