The most observed behavior among the longest lived is radical independence. It isn't wild to suggest surviving a holocaust death camp would make a person more independently minded. Conversely, most people take this for granted while craving conveniences at every turn.

I learned to program JavaScript more confidently on my first Afghanistan deployment. Being able to work offline without references or tools was important when I was constantly on the move. Even to this day portability and performance are the things I value most in an application. Most other JavaScript developers I have encountered in the real world need a mountain of third party libraries and frameworks with a fixed internet connection for the simplest of things.