I recently found this recommended list of backpacking equipment, which notes that a knife, firemaking supplies, and a flashlight are seldom carried. However, deodorant appears to be a necessity. I understand that you might not need a knife for the type of camping that this guy does, but I see a knife and fire as a survival necessities. Also, no whistle, mirror, food gathering equipment, etc. He packs light, but aren't there some things that he shouldn't do without?