Has any model of physics yet been proposed that meets the following criteria? 1. The model is believed to, in principle, yield a full description of behavior at all energy levels. (Nonnegative probabilities summing to 1, no singularities without full mathematical treatment, no infinite values to be artificially renormalized, etc.) 2. The model can be expressed concisely. (A set of equations to print on a T-shirt.) Note that I am not demanding experimental falsifiability, nor that the calculations of behavior have been carried out- or are even feasible. I am also allowing any (finite) number of fine-tuned parameters, as long as they are constants everywhere. I want to know whether there is even a possibility that the fundamental laws of nature have yet been described (on this planet :-) ).