The biggest takeaway from his secrets compilation shows is that PRACTICE is key, when you're NOT lost, NOT cold, NOT thirsty, NOT hungry, so you're not wasting hours... days maybe trying to figure out these things, and the infinite combination of details that can befuddle you when you are lost, cold, thirsty, and hungry...
His first attempt at a fire-bow in the wild, vs. ten years later when he had it down to a few minutes was telling. And he was already something of an expert during that first example they showed.