The laws of thermodynamics (the second one, if I'm not mistaken) basically say that if matter is in clumps, it will become equally distributed over time and not the other way around. But if we look into space, we see that matter was (probably) equally distributed in the beginning and has now condensed into clumps. (Known as planets, even.) The thermodynamic model was originally made to model the behaviour of gases. It does not take into account gravity at all. (From what I can tell.) Therefore, thermodynamics does not apply on the bigger scale as matter tends to collect into clumps, not become equally distributed. This was the point argued by Ian Stewart, Jack Cohen and Terry Pratchett in The Science of Discworld II. (They've been wrong in that book before -- wouldn't surprise me if they were wrong again.) So which is the case? Oh and I've heard that black holes have a very high entropy. How is that possible? Or was this added just so that the laws of thermodynamics would hold?