For example, bradytelic lines — defined by Simpson (1953:113) as low rates or arrested evolution — imply, above all, extremely low rates of morphological evolution over a considerable span of time — usually at least 100 million years.

The tablets upon which the events of the day were recorded refer to enchantresses, and we can conclude that they were by no means restricted to ancient beldames.

Whether modern, industrial man is less or more warlike than his hunter-gatherer ancestors is impossible to determine.[…]One thing that is true, though, is that murder rates have fallen over the centuries, as policing has spread and the routine carrying of weapons has diminished. Modern society may not have done anything about war. But peace is a lot more peaceful.

For mechanical systems, the phase space usually consists of all possible values of position and momentum variables.