How is that obtained?
Consulting about and really choosing the best gear, without improvisation. Today good quality is accessible and the great commercial competition has lowered the prices, and in addition most of it can be rented. It is not necessary to say much about training: it must be intense and extended along several months before the expedition. And motivation must stay on and educated throughout all the process. Many leave without enough fighting, although it is true this natural escape has saved lives.