disagree. you should crack jokes in seminars if you feel like it. a good laugh breaks through a string of dull talks. even if it has a small professional cost, don't let the killjoys who would exact it grind you down. have fun in your life
6/10 You are not Jerry Seinfeld. Few people are actually funny. Some senior people get away with it, and that's where the damage starts: juniors watch, conclude it's fair game, and repeat the joke. If you're a young scholar, you'll never regret a joke you did not say.