system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 When a banana starts to go bad, does the banana make the peel go bad or is it the peel that makes the banana go bad?
gpt
Bananas don't give a damn about who eat them, they only want to be eaten (and theirs seeds dispersed). So, bananas will appeal to a broad spectrum of banana eaters to achieve this. How? they will release ethylene, which is a gas that sends a message (most of times is "die, cell") that makes cells in bananas to start to break apart complex sugars and turn them into easily digestable sugars. More simple sugars, more tasty banana, until it reach a point when it's just a bag of water and sugar that any fungus floating around can eat. That's what you call a bad banana. So, who's to blame? the banana itself, as a whole, not just a part.