On another note, the only thing I had trouble with was #1. Yes, sleeping bags are big and fat and are a pain to carry, but they will make up for it in heat. You need that heat, at least here in the Pacific Northwest where I live. You use a space blanket or bivvy, you get either a miserable night (lucky), or hypothermia (normal). I wouldn’t mind packing a bivvy instead if I lived in a warmer climate, but seriously, don’t skimp on the sleeping bag.
The condition belongs to the geologic age--the great birth and growth of the world, when natural forces ran riot, when the struggle for existence was so savage that no vitality which was not founded in a gigantic form could have even a possibility of survival. That such a time existed, we have evidences in geology, but there only; we can never expect proofs such as this age demands.