An Introduction To be of much practical use, computational models must eventually be constructed in hardware. Locality Physics is chiefly characterised by local interactions. There appears to be a fundamental limitation on the speed of information transfer between spatially separated points. EPR experiments are sometimes cited as indicating quantum events characterised as being fundamentally non-local. However, as this non-locality may not be utilised for the transmission of information, the effect may be ignored in this context.
Locality implies that miniaturization increases speed.
Normally, the smaller your computational elements are, the more of them can be packed together in any given volume, and the faster the resulting computer. The laws of physics appear to be completely microscopically reversible . Reversibility implies that information can be neither created nor destroyed, and that a variant of the second law of thermodynamics is likely to be applicable to the system. It should be clear that locality should immediately suggest the use of cellular automata as a model of the foundations of computational mechanisms. Reversibility , however may need some further elucidation.