

It is widely assumed that the edge human species had was the ability for long distance movement through a high ability to regulate the body temperature very effectively. Through that humans were able to secure a steady and relatively safe and reliable supply of important nutrients, which allowed, among others, the human brain to develop further.
This gave the human species the foundation to grow and settle in other environments and also to focus time and energy on other things like learning to throw or craft tools and weapons, which then solidified and expanded the advantage that had been achieved by very unique biological traits.
So one probably wasn’t possible without the other, but the human species needed both of those developments to make it into the dominant species it now is. It’s not a question of one or the other, one came first and was necessary to be able to develop the second, so in a way you’re right and wrong.











Fr, if earl grey doesn’t count I’m lost