ELI5: Explain Like I'm 5

Hunting hypothesis

Imagine you are a caveman living a long time ago when humans had to hunt for their food. You would have to go out and search for animals to kill and eat. But how did our ancestors learn to do this? That is where the hunting hypothesis comes in!

The hunting hypothesis suggests that our ancestors developed bigger brains and better cognitive abilities because they needed these skills to be successful hunters. Think about it: to hunt an animal, you need to study its behavior and learn its movements. You also need to be able to predict where it might be in the future. All of these cognitive abilities involve really good memory and foresight.

Our ancestors also needed to be able to communicate with each other effectively while hunting. They had to work together to coordinate their efforts to bring down a big animal. This required complex communication skills, and those cavemen who were better at communicating and working together would have been more successful hunters.

So over time, the hunting hypothesis suggests that humans developed bigger brains and better cognitive abilities because of the demands of hunting. That in turn drove the evolution of language and social organization, and eventually led to the development of modern humans.