[frozenice]

  time.Second * time.Second

The type of this is `time.Duration` (or int64 internally), not `time.Second` (which is a const with a value).

I agree, though, that this is not quite sound, because it can be misused, as shown above with `time.Sleep(delaySecs * time.Second)`.

In Kotlin you can do `1.seconds + 1.minutes` but not `1.seconds * 1.minutes` (compilation error), which I quite like. Here is a playground link: https://pl.kotl.in/YZLu97AY8