Dear Mr. TA,

I take it back. You do, in fact, rock the casbah. I apologise.

With love,

Gruntled Student

(Bring it on, Quantum Mechanics! I’ll calculate the second order perturbation to the ground state energy of an electron in a Hydrogen atom due to relativistic effects so well it’ll blow your mind! You want the effects of spin-orbit coupling too? The solution to the radial Hamiltonian? The spherical harmonics of the wave function!?!? No problem!!! WOOOO!)