Re: I-D Action: draft-thomson-postel-was-wrong-01.txt

[Joe Touch <[e-mail]>]

Hi, John,

On 6/22/2017 10:04 PM, John C Klensin wrote:
> Joe,
>
> I think we are in agreement -- we have been so far-- 
We are.
> but let me
> add a real world example that might help clarify some of  this.

Your example makes a good point - my interpretation of that is "don't
rely on half of the Postel Principle".

> ... there is a long history of reasonable
> applications of the principle and an equally long on of
> unreasonable applications including situations in which senders
> have claimed "be liberal about what you accept" allows them to
> send complete nonsense and, if things then don't work, to claim
> that is the receiver's fault (see my earlier comments about
> common sense).
They need to "be conservative in what you send".

The principle cuts both ways.

Joe