I sometimes think that the brain is always searching for more: more information, more connections, and more ways to become complex.
A neuron alone can only do so much. The brain becomes capable because neurons connect and communicate with one another. As those connections grow, the network can process more, remember more, and create more.
That makes me wonder whether reproduction follows a similar idea. Reproduction creates more humans, which means more brains. Each new brain adds another place where information can be received, processed, and shared.
Those brains do not remain separate. Humans communicate through language, relationships, teaching, writing, technology, and shared experience. One person’s thought can enter another person’s brain, change there, and then travel to someone else.
In that sense, the human population might be one giant brain. Individual people are like neurons, and communication forms the connections between them. More humans create more brains, and more brains create more possible connections.
Maybe the brain’s search for greater connection does not end at the edge of one person. Maybe reproduction is one way that the larger network keeps expanding its ability to connect, communicate, and become more complex.
This is not a scientific conclusion—just a random theory I find interesting.