Of course, any sane person without some training is unlikely to dare to cross the desert on foot. Even with maximum knowledge, it is a very, very hard thing to do. But who knows what can happen in life? Suddenly, you will have to fight the heat, thirst, and other "charms" of extreme conditions. You have to be ready for anything. It never hurts to know when it is better to move around the desert and whether it is worth doing it at all.