Brent Meeker writes:

> > Saying that there is a material substrate which has certain properties is 
> > just a working 
> > assumption to facilitate thinking about the real world. It may turn out 
> > that if we dig into 
> > quarks very deeply there is nothing "substantial" there at all, but solid 
> > matter will still be 
> > solid matter, because it is defined by its properties, not by some 
> > mysterious raw physical 
> > substrate.
> But I don't think we ever have anything but "working assumptions"; so we 
> might as 
> well call our best ones "real"; while keeping in mind we may have to change 
> them.

That's just what I meant. If you say, this is *not* just a working assumption, 
there is some 
definite, basic substance called reality over and above what we can observe, 
that is a 
metaphysical statement which can only be based on something akin to religious 

Stathis Papaioannou
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