[ic_fly2]

I’m pretty sure it’s smartphones and aging society.

I’ve been gathering data on the natural experiment that occurred due to differences in proliferation of smartphones across countries. The sex surveys aren’t consistent but that is a very strong factor. Look at the hockey stick curve in the paper here.

The rest of the decline is (in my evaluation) best explained with the increase in average age of the 18-64 year old demographic.

[ancillary]

> The rest of the decline is (in my evaluation) best explained with the increase in average age of the 18-64 year old demographic.

I wondered about this before reading the article, but there's a chart in the article comparing narrow ~10 year age ranges to their past levels, and the decline is persistent in each group, so I don't think it can be explained by the overall population being older.