For a small fee, I will go to your
enemy's conference presentation, be
the first one to raise my hand, and
have "more a comment than a
question" for 3/4 of whatever time is
allotted for questions. For a bit extra,
Ill make sure to remind them of how
tenuous their argument is.
Sure, come to mine. Ask your 'comment' for so long nobody can ask a hard question, then I'll answer your dumb ramble with a snide quip, and walk off to everyone thinking how terribly clever I am and missing the fundamental flaw in my argument that you, as a layman, had no clue about.
My buddy is a professor at a private school that has a 8-1 ratio of student to faculty. They actually have something similar to your scenario baked into their masters and doctoral programs. Every student gets a faculty member assigned to them that helps them through the program, and during student presentations they'll throw them softball questions tailored to the work they helped them put together.
I always wonder what people doing this are expecting to happen in the minds of the rest of the audience. Do they really expect people to think "Wow, such an eloquent and well-thought comment, I'm sure glad I spent 10 minutes listening to this random guy instead of the actual expert I was here to listen to!" or are they just so oblivious that they don't even consider that other people are in the room with actual questions to ask?
They're oblivious. Some people just can't stop talking. It's not just talking too much, but literally talking constantly even if someone else is speaking or commenting on what other people are talking about even if they're not part of it, etc. They're really annoying to be around and especially annoying if you're trying to present something for a group and they think they're having a one-to-one conversation.