system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why people think crystals have powers, healing ability, or other capabilities and why? Is there any scientific evidence?
gpt
Humans have a tendency to believe all sorts of hocus pocus after observing a false positive or two.

We're hard wired to assume that a pattern exists even if the data is merely noise.  This was vitally important to our ancestors since assuming the rustling in the grass was the wind when it's a saber-toothed cat was understandably problematic.  In modern society it's less useful.

Crystals are highly ordered ionic solids. They can have interesting properties, but magical healing abilities are not among them.