[EMAIL PROTECTED] skrev:
>
> As far as I tell tell, all of physics is ultimately
> geometry.  But as we've pointed out on this list many times, a theory
> of physics is *not* a theory of everything, since it makes the
> (probably false) assumption that everything is reducible to physical
> substances and properties.

I think that everything is reducible to physical substances and 
properties.  And I think that all of physics is reducible to pure 
mathematics...

I have now read Garrett Lisis paper.  It was interesting, but it is 
still to early to say if it is important.  There is a lot of symmetries 
in the elementary particles, and there is a lot of symmetries in the E8 
Lie group.  So it is not any suprise that they both can be mapped on 
each other.  Lisi has mapped 222 elementary particles on the 242 
elements of E8, and he has predicted that the rest of the 20 elements 
correspond to 20 yet to be discovered elementary particles.  If it is 
true, then Lisi will have the Nobel price.  If it is not, then we will 
have to look for another TOE.

But it is possible that we will never find any TOE.  Because there is 
10^500 different possiblities for our universe, and all of these 10^500 
universes exist in the same way.  By experiments we will have to decide 
which of those that is our universe, but we will never reach the correct 
answer, the number of experiments needed will be too many.

-- 
Torgny

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