# The Reality of Abstractions and Mathematics This has been touched on in several great books. * Darwins Dangerous Idea, pg 128-132 140, Forced Moves in the Game of Design * Idea: Some things are *forced moves* in *design space*. These are likely to be converged upon again and again. This gives them a sort of objective reality. * Fabric of Reality, pg 88, Chapter Criteria For Reality, The Nature of Mathematics, * We must adopt the methodological rule that if something is capable of "kicking back", then we regard that as evidence that it exists. * The Beginning of Infinity, Chapter The Reality of Abstractions TODO: Post on this