PS: jokes

[jack]

An example I forgot to include in the previous post is jokes. If someone cracks a joke in conversation, they generally feel fine if broadly similar ones have happened before. But if you have a pun, sitcom sketch or other specifically crafted joke, you generally feel like you ought to have found a completely new one, even though having been done before doesn't make it any less funny for most people. You hoped it would be *so* ingenious it would be genuinely new, and are afraid you'll look silly if you present it as new and it isn't.