I Know Less Math This Year Than I Did Last Year

As you get more advanced, you start to see the amount of things that exist that you just are still so far from. You can't know what's coming, but you don't really know how it's going to come. In terms of liquan mechanics, you do like observables, a spin, polarization, and then other things, until you get to the hydrogen atom. And then in the continuation of that course, you just restart everything, but make it more general. So now, in the third iteration, i don't knowit what's coming up. Like, i i know the very first unit is a per perturbation theory, but i don't even know how