Why has base class protection been deprecated?

[David Bryant]

On 04/24/2012 11:07 PM, Don Clugston wrote:
> On 24/04/12 15:29, David Bryant wrote:
>>>
>>> Because it doesn't make sense. All classes are derived from Object. That
>>> _has_ to be public, otherwise things like == wouldn't work.
>>>
>>
>> Does the same apply for interfaces? I'm specifically implementing an
>> interface with non-public visibility. This shouldn't affect the
>> visibility of the implicit Object base-class.
>
> Right. Only classes are affected.

Ok...so I still don't understand why the original example shouldn't 
compile. I'm not trying to change the visibility of the base class but 
rather the visibility of the interface.