The colder the climate is across millennia, the more likely the inhabitants are to have the courage to try the difficult thing(s). https://en.wikipedia.org/wik

The colder the climate is across millennia, the more likely the inhabitants are to have the courage to try the difficult thing(s). https://en.wikipedia.org/wiki/Yuri_Gagarin https://en.wikipedia.org/wiki/Yuri_Gagarin