Why can't I have protected interface members?

Question

What is the argument against declaring protected-access members on interfaces? This, for example, is invalid:

public interface IOrange
{
    public OrangePee         


        

Answer 1

An interface is all about what a certain object can do, so when using a class which implements that interface the developer will expect all the members to be implemented, so the protected access modifier won't mean anything for interfaces.