Why is it that the smaller the black hole is, the more quickly it supposedly evaporates? It seems like a black hole should radiate energy proportional to the surface area of the event horizon. To me it seems like the evaporation should slow down the more the black hole shrinks because the energy radiated per meter^2 of the event horizon is constant (Maybe that's wrong but i don't know why). My impression was that the the consensus was that small black holes evaporate very quickly and i'm just wondering what logic/evidence that's based on. Thanks for your time and let me know if im just totally wrong in my understanding.