The link between entropy and probability may give an idea of why
entropy is growing: The probability of receiving a low-entropy macro-
state is smaller than the probability of a high one. So everything is
proceeding in the direction of higher entropy.
When changed, a macrostate will inexorably lead to another macro-
state, with higher entropy—and thus more microstates corresponding
to it than the first. Keeping track of the world becomes ever more diffi-
cult and tedi