Maybe it is having some experience looking dumb, or possibly I’m incredibly authentic, but I find that it is very easy to me to sport a puzzled look and say, huh? Be honest, you can visualize me doing that can’t you? I am also very willing to ask for directions (but that is an entirely different topic).
I find myself completely baffled, when people do not want to admit they are confused. The fear of looking dumb seems to be so strong in many of us, that we will keep quiet and never ask vs. risking the idea that we are the only one with a question.
Too many times, I have seen people choosing to go in an entirely wrong direction, hoping vs. knowing. That’s right, in an attempt to not look stupid, they increase their risk of just that.
People, not understanding something is normal and expected. Pretending you do understand, when you don’t, is dumb.
Gathering up the personal courage to admit what you don’t know, will set you apart and make your peers appreciate that you asked the question they could not bring themselves to ask.
That’s right, asking questions doesn’t make you look dumb, it makes you look brave. Quit trying to fake it people, it never works out in the long run.
Meg Bear 
I completely agree with you. I think one of the best things I’ve learnt in my working career is that it is better to ask a stupid question than make a stupid mistake.