Re: The Quine challenge

[John Cowan <jcowan@reutershealth.com>]

Jorge Llambias wrote:

> >I think they are: preclusion is irreflexive, symmetric, and transitive.
> 
> This is beside the point, but... transitive?!

Arrgh. I typed that sentence three times and still got it wrong.
*Intransitive*.

And you're right: in the club specifications, I meant "precludes" to be
asymmetric, but in the definition of "final club" I meant it to be
symmetric. The asymmetry was just for brevity: you can cure it by
adding a general rule: "Membership in any club K precludes membership
in every club that explicitly precludes membership in K."

-- 

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