Better without this kind of tautology. Often, popular science books while in attempt to make physics more "accessible" end up mystifying it.
I think time in physics can be explained in two simple lines. Most people will understand:
1, in physics, there is no time in the ordinary sense, instead, it is only a variable in the equations measured by the clock.
2, in physics, if there is anything similar to our experience with time, it is the notion of entropy in statistical physics which demonstrates how a well established structure loses its characteristics.
