system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are glass knives not commonly used to bypass metal detectors?
gpt
Glass is very good at cutting, but it's very subject to chipping and breaking, so glass knives have a *lot* of limitations. In short, you'd need to be extremely skilled to reliably kill someone with such a blade, and evidence suggests you could slip a bomb or a gun past TSA... so why would you try a blade?