I do also think that any such summary statistic can only show a small part of the picture. Of the time _not_ spent alone, how much is with a single other person as you look at different screens? Of time spent not alone and outside of the home, how many people are we with at any one time? How many different people do we have social interactions with per month? I.e. is the quality of our social interaction getting worse, are we with smaller groups, do we have sparser social graphs?

I could believe that you're right that the variance has increased, but is that driven by a growing share of shutins who only interact online and who are shifting to LLM friends?