Paul810. I'm second to that. Knife, shears, multitools... - easy to improvise functions. Fire - no easy way. I believe human became human when they found a way to make fire (which in turn provided the ways to make good tools).

Anyhow, IMHO, tool of choice - is a wrong question if it's out of context of "best for the job". We talking here not about the job, but about survival I believe?

Ouch! Around The Campfire forum section? Not the long awaited Gear Only one? Well, then my brains is my tool of choice. And this forum is the proper sharpener. So, isn't the Internet is the best tool for the job then?