Why can't the method increment the variable passed to the arguments?

Question

Kotlin

And I pass a mutable variable var number = 5 to the method

printNumbers(number: Int) {
number++ // подчеркивает красным, предлагая создать локальную переменную
}

It works only if you overwrite in the method:
var number = number
But it looks kind of silly .. or is it supposed to be done this way?

Answer 1

These are the features of kotlin. Function arguments are immutable (we can conditionally assume that they are val).
I do not remember a single case when I would need to change the function argument.

Answer 2

So there is only one way out - always overwrite in a local variable?