Just as that person was 1 of 10,000 learning something for the first time today, I hope that today you learned that not everyone has exactly your set of knowled

Just as that person was 1 of 10,000 learning something for the first time today, I hope that today you learned that not everyone has exactly your set of knowledge. Also consider that it is quite likely that person is an expert in several things you have never even heard of. XKCD 10,000: https://xkcd.com/1053/ https://xkcd.com/1053/