Homotopy Memes

Nothing strikes fear into the hearts of math students quite like a professor who presents an incomprehensible theorem about homotopy groups and 2-group transformations, then dismisses the proof as "obvious." The progression from "obvious" to "straightforward" to "easy" to "immediate" to finally "exercise" (translation: "figure it out yourself, peasant") is the academic equivalent of watching your GPA plummet in real-time. Every math major has experienced that moment of silent panic while pretending to understand why π i P = (π i Q) a is supposedly "trivial." Pro tip: If your professor says "obvious," it means they forgot how to prove it themselves.