"average person knows about a thousand 字" actually shouldn't be that far off on a global scale. maybe more like 500?

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqqu56p82wp0ucpu7jkwcvvtfdc7wcmuqkdrqvzpkwl78rdkkckucq68ds0l TIL: 石英＝quartz