The- the- the- failure modes. The things, bad ways to navigate your career. Um, there are some students they just do this, right? There are some Stanford students that just take class, after class, after class, after class, and go equally in depth in a huge range of areas. And this is not terrible. You can actually still got a job uh, uh you still get. Sometimes you can even get into some Ph.D. programs like this with all the depth, but this is not the best way to navigate your career. All right? So, there are some Stanford students who's- that takes tons of classes.