Except income is no longer bimodal. It was back in the 70s, but now there's just...

Except income is no longer bimodal. It was back in the 70s, but now there's just a single peak. See:

However, growth in income is bimodal:

Could that affect the phone market indirectly, by consumer confidence? It's possible, but it's not nearly as clear-cut as human height.

coldtea on May 5, 2019 [–]

Also account for wealth (we don't make the distinction between income and wealth much in my here parts).