think the meme has some grounds for truth. of course it was designed to be a dramatic speech for a scary character but it has some grounds to it: this may not be the truth but its how it feels. By doing the same thing over and over again and seeing no chance you go insane, and as such it feels like doing so is asking for insanity, thus the characters speech!

For the training, I’d argue that you’re not trying to get different results.

Each time, the result is minor growth in whatever your goal is, be it strength, muscle mass, or endurance, etc.