I do not argue with 'your half' of the 'answer' you gave to the conference 
announcement of J├╝rgen Schm , I just ask for the 'other part': what should 
we call "a computer"?

'Anything' doing Comp? (meaning: whatever is doing it)?

Will the conference be limited to that technically embryonic gadget - maybe 
even on a  binary bases - we use with that limited software-input in 2006? a 
Turing machine?

John M

----- Original Message ----- 
To: "Everything List" <>
Sent: Thursday, November 02, 2006 10:09 PM
Subject: Re: Zuse Symposium: Is the universe a computer? Berlin Nov 6-7

> Ah the famous Juergen Schmidhuber! :)
> Is the universe a computer.  Well, if you define 'universe' to mean
> 'everything which exists' and you're a mathematical platonist and grant
> reality to infinite sets and uncomputables, the answer must be NO,
> since if uncomputable numbers are objectively real (strong platonism)
> they are 'things' and therefore 'part of the universe' which are by
> definition not computable.
> But if by 'universe' you just mean 'physical reality' or 'discrete
> mathematics' or you refuse to grant platonic reality to uncomputables
> or infinite sets (anti-platonism or weaker platonism) then the answer
> could be YES, the universe is a computer.
> Cheers!

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