system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 How Boomerangs work?

What about its shape allows it to return? How about the material? Does that change its trajectory?
gpt
essentially a boomerang is just a pair of wings attached to a gyroscope, so, you know how when you try to turn a bike wheel while it's spinning the wheel resists your attempts to turn it? when you throw a boomerang it spins and has this same effect, the wings are pointed in such a way that one side pushes up and the other side pushes down, this makes the boomerang want to flip over, the spinning of the boomerang resists this action turning it into a vertical rotation.

the material is mostly irrelevant (except for the weight) it's mostly the shape and the spin that makes it come back.