conway wrote: >> How is 0 space? > > Markus > > > I can "see" the space of zero on ANY number line. Anyting that is "empty" can be measured. ANY time I have zero of anything, I still posses space. > Yes, but, not only aren't numbers what you can see (or even "see"), but they don't constitute lines either. The one-one correspondence between numbers and points on a line is a postulate of the arithmetization of Euclidean (for example) geometry. In finite geometries and non-metric geometries there is no such one-one correspondence.
-- Do, as a concession to my poor wits, Lord Darlington, just explain to me what you really mean. I think I had better not, Duchess. Nowadays to be intelligible is to be found out. -- Oscar Wilde, Lady Windermere's Fan