Just learned that Swift’s Duration measures time down to an attosecond (1×10^-18 of a second).

There’s forward thinking, and then there’s attosecond forward thinking. According to Wikipedia, an attosecond is to a second as a second is to about 31 billion years.

I suppose this gives the option of Duration being used in scientific computing, but it’ll be a long time before attoseconds would make sense to measure an interval in coding.