system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 if every cell in your body gets replaced over time, how does your brain maintain memories?
gpt
Neurons that compose memories do not normally die and are not replaced by newly forming cells. The cell is replaced in the sense that sooner or later every molecule is swapped out as a normal part of cellular maintenance but the entire cell is never replaced all at once.

Think of a car for example. A normal cell dying would be like a car exploding so you buy a new one. For neurons, its like replacing a wheel one day, the windshield the next, and the seats sometime after that. Sooner or later its a new car because the parts are replaced but it still operates the same and carries the same function.