It's always circular, too. You knock down one argument, go through the discussion, and half way through they no longer realise they agreed that an earlier discu

It's always circular, too. You knock down one argument, go through the discussion, and half way through they no longer realise they agreed that an earlier discussion point was invalid. thingx disproved... they say "ok". 10 minutes later "but what about thingx!" I've had to say "now you can never, ever mention thingx again, right?", but of course, they do, and look baffled when you say no.