Puzzle 3: Team-work
TRIVIA
The ability of humans to work together or cooperate has played a major part in our success.
When we work together we can achieve so much more, and human's by and large are great at it (YMMV). We're so prone to cooperation that Darwin viewed it as a challenge to his theory of natural selection. After all natural selection largely works on behaviours that benefit the individual and their offspring. General, societal cooperation didn't fit this pattern.
Science Direct: The evolution of human cooperation