&gt; The Bayesian approach is to assign a prior distribution to various theories of this nature. Because there are infinitely many possible priors, most exceedingly complicated (because the set of priors of complexity &lt; C is finite or at least compact), we&#x27;ll need to (eventually) assign low probabilities to high complexity ones. This gives a natural derivation of occams razor as well, at least as an asymptotic law.<p>Is the asymptotic relevant though? Physical theories are finite and generically quite small, and we have no a priori way to fix C.