system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are fishing poles/line so strong?

I’m sure it’s something to do with the materials they’re made out of, but watching some fishing videos I just feel like they HAVE to snap more often than they do, but they don’t??
gpt
The lines themselves are pretty strong, but the pole does a lot of the work too. Look at a fishing pole when there’s a fish on the line - it’s curved. The pole is strong, but also very flexible. That flex helps even out the energy of the fish pulling, so it doesn’t snap the line. If the fish jerks suddenly, the pole bends to absorb it, and the sudden force doesn’t hit the line all at once. 

It’s a lot like a tree in the wind. A tree that can bend and flex with a high wind will stay standing, while a tree that can’t move may get blown over.