I do a lot of observing - objects, colors, but, mostly, people.Next time you’re in a Walmart or Costco, or a mall; watch people and see who you think will survive a TEOTWAWKI event. It’s not hard to figure out and it may come in useful later on.
Oh, you’d be surprised. A millionaire may be the scruffiest guy in the crowd. The most buff dude may not know the difference between a flat head and a Phillips.