Are you worried about the thermodynamic arrow? Unsure why entropy ought to always increase? Then we suggest you buy this package of statistical mechanics. Reduce your thermodynamic anxieties now.

*DISCLAIMER: to use your statistical mechanics package to get an increasing entropy gradient you may also need to buy a low entropy boundary condition. We suggest that you check out our sale on the Big Bang or, conceivably, the Big Crunch. 

Statistical Mechanics