system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: how is one brain smarter than another? Does it process information more efficiently does it have more neurons what are the differences?
gpt
We don't know. We simply don't have a definition for "smartness" or know where it comes from. What we do know that those who are able to use more parts of their brain for a task, as in visualise problems, can perform better in many things. We been able to measure this by tracking blood flow in the brain, but other than we simply don't know. Especially since many things we test for in IQ tests are things you can practice.

Only thing we have a strong connection in is that language skills seems to give an edge, as in more languages you can understand and use, along with mathematical abilities being connected in to understanding language. What or why? We simply don't know.