The aging (or younging) of a population refers to the fact that a population, as a unit of observation, is getting older (or younger).

It doesn’t matter how strong your USP is or how powerful your value proposition, if the message isn’t reaching the right people you're whistling in the wind.

Climbing trees was an accomplishment of Alexander's, but the sloe-bush seemed to him dense, prickly and not quite assailable.

Thus someone may misexecute what he has decided to do after deliberation through failure to attend sufficiently closely to his actions, as when a surgeon fails to notice what sort of incision he is making.