The authors aim to reinstate a spirit of philosophical enquiry in physics. They abandon the intuitive continuum concepts and build up constructively a combinatorial mathematics of process. This radical change alone makes it possible to calculate the coupling constants of the fundamental fields which ? via high energy scattering ? are the bridge from the combinatorial world into dynamics. The untenable distinction between what is ?observed?, or measured, and what is not, upon which current quantum theory is based, is not needed. If we are to speak of mind, this has to be present ? albeit in primitive form ? at the most basic level, and not to be dragged in at one arbitrary point to avoid the difficulties about quantum observation. There is a growing literature on information-theoretic models for physics, but hitherto the two disciplines have gone in parallel. In this book they interact vitally.