What is Primitive Survival Rating?

A number up to 10 ,that shows the "likeness of someone to survive" in a primitive environment with bare minimum to none resources.

Well I was watching Discovery's "Naked and Afraid" show (Global Showdown is on and... is tough). In the show they have this thing called PSR: a number that is associated to a person in the show trying to survive literally naked.... So, instead of jumping into the wild with no idea at all of what to do nor how, i decided to read about stuff and build me a tool. PSR in the show is obscure and non deterministic and opinion based... so, since i searched for a tool to asses myself and couldn't find a proper one .... had to make my own!

IMPORTANT: For the record, this tool and guides and all is fan made , the expert in the title is just for fun, this is an entertainment tool, couch survival only, fan made thing. DO NOT USE anything in this tool to make any decisions!