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I've climbed some mountains, and while I don't know if I would be capable of doing Everest, I do know that I wouldn't want to (unless I could do it like Goran Kropp: https://en.wikipedia.org/wiki/Göran_Kropp). I guess I could brag if I doped myself, took a helicopter past the Khumbu Icefall, and had servants carrying my stuff the whole way to the summit, but I could never be proud of myself for doing that.