The second law of thermodynamics is an expression of the universal principle of entropy(Entropy has often been loosely associated with the amount of order, disorder, and/or chaos in a thermodynamic system), stating that the entropy of an isolated system which is not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium, and that the entropy change dS of a system undergoing any infinitesimal reversible process is given by δq / T, where δq is the heat supplied to the system and T is the absolute temperature of the system. In classical thermodynamics, the second law is taken to be a basic postulate, while in statistical thermodynamics, the second law is a consequence of applying the equal prior probability postulate to the future while empirically accepting that the past was low entropy, for reasons not yet well understood.

In plain speak, the law has it that states tend to proceed from order towards chaos. And yet we find, in our world, the very opposite happening on a macro level. We observe, for example, forms of life going from strength to strength (or, perhaps rather, evolving) rather than falling out of existence as energy is continually zapped.

This gradual improvement in the state of the world runs contrary to the law – apparently, anyway. I believe that this is a sign that the world is constantly being shaped by an intelligent process which manifests purpose as opposed to random decline. This ‘intelligent process’ could be called "God".

Paul Davies, the prolific British writer on astronomy, who is not an atheistic evolutionist, but a pantheistic evolutionist, has faith that order can come out of chaos, that the increasing disorder specified by the entropy law (second law of thermodynamics) can somehow generate the increasing complexity implied by evolution.