system
Given the following post, respond as if you're commenting on Reddit:
human
Our body is almost made entirely out of cells and those cells constantly renew each other. So why do we grow older and die?
gpt
Think of it like a photocopy machine. Place an image inside and have it print out. Looks pretty good, doesn't it? Now take the copied version and place IT in the machine. The copy of the copy also looks pretty good. But repeat this process a thousand times and you're going to notice the picture quality has begun to fade. That's a simplified version of what's going on with your cells.