Another way to see the problem is to think about public spaces. If you share a space with people who aren’t looking at their smartphones, you are all in that space together. You have a common base of experience. It can be an amazing feeling, and it’s a big reason why people go to clubs, sports events, and houses of worship. But when everyone is on their phone, you have less of a feeling for what’s going on with them. Their experiences are curated by faraway algorithms. You and they can’t build unmolested commonality unless the phones are put away.