Why can't Any be cast to Int?

Question

Swift

Hello!
I don't quite understand why I can't cast Any directly to Int?

let str: Any = "12"
print( str as! Int )

At the same time, I can safely cast Any to the string

let str: Any = "12"
print( str as! String )

It turns out that I need to cast Any first to a string, and then to Int.

let str: Any = "12"
print( Int(str as! String) ?? 0)

What is the logic behind this behaviour?

Answer 1

because these types do not have the same protocols:

error: protocol type 'Any' cannot conform to 'BinaryInteger' because only concrete types can conform to protocols
print( Int(str) )

and yes, cast to string and then to int.

Answer 2

And if without quotes?

let str: Any = 12
print( str as! Int )