system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why don't people feel the urge to swallow gum?

Since most pieces of gum are bite sized, it seems like something that people would swallow more frequently. Are we just trained not to swallow it? That's why people are more reluctant to swallow gum? Because I have to try to force gum down.
gpt
Yes, we are pretty much trained not to swallow gum. If you give young children gum, they will swallow it. They need to learn not to swallow it. And eventually the idea of not swallowing gum becomes so integrated in your mind, that you start finding it hard to because you are going against everything you learned.