&quot;such broad definitions can quickly degenerate into <i>pancomputationalism</i>: everything computes. And, if everything computes, computation is an uninteresting concept. The brain computes, but so does a piece of wood. Computation is simply another word for behaviour subject to (natural) laws. The Universe is a big computer, computing its own future — grand but somewhat vacuous.&quot;<p>- nice quote from the link you posted.