Word of the Day - Perspicacity

[debodun]

Perspicacity (noun) - the quality of having a ready insight into things; shrewdness.

As I grow older, I fear I am losing my perspicacity.

 

[ohioboy]

My propensity for perspicacity has personally plummeted.

 

[Paco Dennis]

 

[Kaila]

Where does one go looking for it, if and when, one loses their perspicacity?
Where is it that it typically would be stored?

And where was I, when I last saw or used it???