Re: [Hist Trivia] IP Protocol Layers

Jon Crowcroft wrote:
> on reflection (pun intended):
> layering is a clothing methodology for people who live in fractal climates
> not a design pattern for correct or efficient communications
> systems....
>  cheers
>
>    jon
Another adage:

        model != mechanism

I.e., layering is, IMO at least, a model. Fine for
describing things, but not necessarily a good blueprint
for an implementation.

Joe