Gyde's first prompt

On Page 154 (paperback version), Scott Fischer says "If you're bummed out, your not gonna get to the top, so as long as were up here we wight as well make a point of grooving." This sort of says that you've got to keep your head on to make it to the top, and that you have to make good decisions. If you are in that extreemly low oxygen enviroment, do you think that it is possible to keep your head and make the correct discisions all the time? Obviously something went wrong, and Fischer didn't make it back down the mountain. Answer the question, and give you thoughts on this concept.