Lots of times, unforeseen questions come up at meetings, in fact, if they don't; that's a sign the meeting wasn't really productive at all. Google should be on a large screen in the conference room. Or Bing if you're into that. Most meetings I get invited to end up with "action item" which means really, people go back to your desks and Google, research, test, decide, etc. so we can have a followup meeting to decide what we could have decided together in the first meeting if we didn't shut ourselves into a conference room, away from the world on the pretense that the meeting will be 100% productive that way.