On 6/12/2013 2:20 AM, Telmo Menezes wrote:
On Wed, Jun 12, 2013 at 11:17 AM, Bruno Marchal<marc...@ulb.ac.be>  wrote:
>
>On 11 Jun 2013, at 23:18, John Mikes wrote:
>
>Laughing stock: how can so many excellently educted and smart(est)
>scientists SERIOUSLY debate on farces like flying pink elephants?
>
>
>
>Those are test cases, extreme case, to argue more easily on the question of
>existence, which is not obvious.
>Of course we are not discussing on the existence of flying elephants at all.
Maybe on a smaller planet with less gravity or a denser atmosphere
flying elephants would be a viable evolutionary niche?


But in what sense would they be elephants? That's my point: 'elephant' is a category we make up.

Brent

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