> People often think that if you don't respond to an argument in two seconds you "lose"...

This one is especially annoying! A lot of people seem to get away with extremely poorly thought out arguments, relying entirely on logical fallacies, or using factually incorrect information, just because they are able packaging it as a fast comeback. On the other hand, people seem to treat not being able to remember details about something or taking a little time to think before replying as meaning that the underlying facts are incorrect. Surely the underlying facts does not depend on the debaters ability to remember them on the spot, but it seems like a lot of people treat it that way.