As I said above, panics should ideally never be able to occur, but be part of the type system.
In languages with dependent types, for example, it’s common to represent a Stack in a way that number and type of elements are stored in the type (so you can’t even pull from an empty stack – that’d be a compile time error).
In the same way, the random number generator should either return an error, or use a number type that can only encode positive numbers as input.
Especially if combined with the interface{} everywhere across the new stdlib functions this all smells very much like C's problems.
