I don't see how it being a network instead of a stack makes it immune to the problem I described. Stacks exist within the network. I can always trace back from one word within each definition either to infinity or back where I started. But obviously, we do have a way of dealing with this, so in that sense it isn't a problem.

I do not believe in the mind. I mean to place quotations around it when I use it, but sometimes I forget or get lazy. I think of "mind" as synonymous with "soul". I defined them together earlier as an illusory projection of the brain, which is physical. As for geometry, most geometric objects don't really exist and are idealized so that mathematics can be built around them. But I suppose that ideas can "exist" in some sense. But is an idea the same as an immaterial object?