HotCoffeeI understand prop flying sorta, but 95% of this is visual gibberish.
tas works differently in different games. portal has a lot of exploit possibilities which inevitably breaks the original sense of the game and the suspension of disbelief when you tas speedrun it.
in games like smash bros, like the video i posted, tas remains only in the fundamental characteristics of the game so it basically becomes illusion of perfect, impossible skill....which is cool.