Technological Determinism Theory

• In the late 19th Century, environmental determinism was revived by the German geographer Friedrich Rätzel. He was heavily influenced by evolutionary biology and the impact a person's environment has on their cultural evolution.
• Rätzel's student, Ellen Churchill Semple, introduced t...

So the combination of melatonin, smell and sound creates the conditions for being sleepy.

My own theory has to do with preservation of energy. If it rains most animals have a harder time to foridge for food or you can even get sick if you prance around in the rain. 

If you can't eat y...

• In 1994 Nash, Selten and Harsanyi became Economics Nobel Laureates for their contributions to economic game theory.
• Non-cooperative games are those where participants make non-binding agreements. They base their decisions on how they think the other participants will behav...