Q: Why is a protoobject considered undef?

[Austin Hastings]

Jonathan Worthington wrote:
> On 05/03/2010 04:10, Austin Hastings wrote:
>> One of the things that has been griping my wagger recently is the 
>> fact that P6protoobject overrides vtable_defined so that protoobjects 
>> are always considered undef.
>>
>> Is there a good reason for this?
> Yes; proto-objects are what fill the niche of (typed) undefined values 
> in Perl 6.

I have no clue what that means. Can you elaborate?

=Austin