Imagine you were immensely rich, and you lived a hundred years ago. Imagine you wanted to be able to know, at a glance, at any time, how immensely rich you were – your net worth. I could be wrong, but I think it probably couldn’t be done; merely gathering never mind collating the data would take, what, hours? Days? Imagine you wanted to have that data available on your wristwatch. Imagine the infrastructure that would have to be developed, never mind the mechanical machinations involved in displaying it. Your immense wealth literally – probably – couldn’t buy you what you wanted.

If today you are immensely rich and want to know, at a glance, at any time, how immensely rich you are, you could have a developer create a bespoke Apple Watch app just for you that gathers information in real time, collates it, and presents it as a complication.

And the thing is that you don’t even have to be immensely rich. If you have a strong and unique enough need for a small snippet of information to be always updated and always available, it’s not ridiculous to commission a dev to create a Watch app for you that does so. What a hundred years ago no amount of money could buy, today a small amount of money can easily buy.