if you follow the checklist through with your thumb, you won't miss anything.
Wow, that's a really brave statement.
Seriously though, while I think it's reasonable to say that the use of a printed checklist, will be beneficial, especially in the early stages, if we assume that the OP is referring to light aircraft. There's been many times I've had students skip a line, or even an entire section/page, even if they have been using the "thumb" technique.
