This article is meant to appear in Project Galactic Guide some time, but is not finished yet. It probably lacks a lot of information, or otherwize has old or outdated ideas, so this article is at the moment not my official opinion, and should not be treated as such. You can learn new things from it. This means that you can, entirely without thinking, keep any conversation going as long as you want while still appearing to be interested. It can also be a good way to play the roll of smart-ass in business meetings.
Children use it a lot as a means to drive their parents crazy.
People, however, don't like it when you say that to their children. If you, on the other hand, want to continue the conversation, you will have to put your brain cel to use and come up with some appropriate reply.