You're gear is a life support machine, and I see too often too little safety margin.
I think you are on to something. I keep thinking about Aron Ralston. That guy (appropriately) got a lot of grief on this website. He broke about every survival rule there was--but at least he had a knife of some sort on him when he needed it.
I wonder if he would have been able to physically do what he did with just a razor blade?
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