system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do potholes appear suddenly on roads?

Because it wasn't there yesterday and I kind of hate them.
gpt
Someone will give a better, more detailed answer, but it is do in part to water getting into tiny cracks or crevices in the asphalt, then freezing into ice, which expands, causing the cracks to grow larger and, with the help of constant wear and tear of vehicles constantly using the road, leads to potholes.