Tim Cook wrote:
> Tangental to that, on the topic of imagination.  The brain-in-vat thing 
> is shot down by the idea that, if we *were*, we'd be unable to conceive 
> of the notion of a brain-in-a-vat. 

I can't imagine why that would be the case. No, if we're all computer 
simulations, you could argue that the simulation might be programmed to 
prevent us from noticing it's a simulation. But an evolved brain in a vat?

> Gravity might well be necessary, once we discover what the heck it IS.

I think the whole concept of "necessary" conflicts with the concept of 
"omnipotence."

-- 
   Darren New, San Diego CA, USA (PST)
   I ordered stamps from Zazzle that read "Place Stamp Here".

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