system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do spears for fishing typically have 3 prongs?
gpt
Such as a trident?

Typically because fish are lateral and linear.  Three points broadly struck prevent the fish from gaining enough momentum to wiggle free.

1 or 2, and a fish coukd still.throw its weight back and forth.  3 stabilizes the fish, preventing this.