teach in our undergraduate classes I'm trying it's really hard to teach them anything else to be honest nuance is really difficult at the undergraduate level especially when there are 700 of them so I think that's a kind of complicated thing but it is this weird thing that we're in the square in this weird regime where everybody here knows that none of these are true so how I want to push in a little bit on some other things that we tell people that also maybe aren't true kind of in this talk just in case you you don't