@andyhudd,
nothingness,
infinity,
points of reference - we know they exist,
y=1/x
when x is zero, y is infinite, when one pictures the graph,
one places the two points conceptually, to place a point zero,
we make a pixel which points to nothingness on the line x=0
and the pixel at the top of the graph as Y=infinity
but it
points to infinity; the pixel of x=0 can only be represented
as a thing, not a nothing
and we all agree we know what these mean,
and yet they do not exist in any actual physical terms -
their origins are
metaphysical.
If the mind were merely a physical brain, and thus finite and definite,
how could the mind comprehend something which is not definite (zero)?
how could it comprehend (include) that which is infinite?
something which is not a quality of the world -
not a property of this biological entity called body?
It holds that the comprehension of zero and infinity by mind
shows that some aspect of mind is not of this physical world
mind is metaphysical