I do this all the time. I'm a non computer engineer who gets pulled into all sorts of computer related things as the contact point with the actual business. Having a good BA and someone who asks stupid questions make such meetings end in positive results much more often.

I also preface with saying I'm going to ask stupid questions and if anyone holds it against me I'm ok with it. If I'm asking a question it's usually because I don't understand a consequent of something someone said that everyone seems to just nod their heads and agree with, and that gives everyone an opportunity to reconsider the fundamentals.