YADTR (Yet Another DateTime Rant)

[Roy Smith]

In article <533558fa$0$29994$c3e8da3$5496439d at news.astraweb.com>,
 Steven D'Aprano <steve+comp.lang.python at pearwood.info> wrote:

> > Yes.  The whole idea of OOD is to decouple internal representation from
> > external behavior.
> 
> The *whole* idea? You don't think that encapsulation and inheritance 
> might also be involved? *wink*

I'm not sure how "decoupling internal representation from external 
behavior" is substantially different from encapsulation.  And, no, I 
don't think inheritance is a fundamental characteristic of OOD, nudge 
nudge.