Well, I guess Jeb shouldn't have answered so many questions then, because he flubbed up big on the Iraq question. If you answer 800 questions, chances are at least 1 of those is going to be a huge flub up. Do we really want a president who doesn't understand probability?
I'll refer to Teddy Roosevelt who said "In any moment of decision, the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing." So yes, I'd rather have a person for president who gets out there and tries but occasionally makes a mistake, than a person who makes no mistakes by doing nothing, AKA Clinton.