[Python-3000] Abilities / Interfaces: why not adapt()?

[Bill Janssen]

> To some extent I agree, but I also think that generic functions are
> even more flexible. (As per the previous discussion which started
> covering adaptation and moved on to generic functions).

While I like generic functions, they only solve part of the problem.
There are cases other than calling a function when a program needs to
be able to look at a type and understand what to do with it.  I'd
favor promoting an inheritance-based interface system for type
understanding, then move on to generic functions based on that
infrastructure.

Bill