5 thermostats in the right comfiguration can be a universal computer. Approximation, in the computational sense, is relative to some well defined function, whic

5 thermostats in the right comfiguration can be a universal computer. Approximation, in the computational sense, is relative to some well defined function, which gives the approximation an ontology. The feasability of approximation is not disputed, but the content and nature of the ontology is a battlefield of motivated rhetoric. Yes, this is arguing semantics but in this particular case, semantics is the whole point.