My grandfather could probably have told you how many electric motors he owned. There was one in the car, one in the fridge, one in his drill and so on.
My father, when I was a child, might have struggled to list all the motors he owned (how many, exactly, are in a car?) but could have told you how many devices were in the house that had a chip in.
Today, I have no idea how many devices I own with a chip, but I could tell you how many have a network connection. And I doubt my children will know that, in their turn.
The entire column about the Internet of Things is insightful, as per usual for a Benedict Evans piece, but I’d like to point out his brilliant way to write an opening.