Function parameters now have distinct “internal” and “external” parameter names. The simplest form does away with named parameters when calling functions, that is, we can now do:
mysteriousFunction(15.2, "yeah, right", "only on a sunday", -1)
…just like in the good(?) old days of plain C/C++. Yes, you can force naming of parameters on the caller’s side, but it’s more work than the sloppy old way. Guess how often we’ll see that now? So, simple, inscrutable, and bug prone is the new default.