How did acumen evolve?

A keen mind and a sharp wit can pierce the soul as easily as a needle passes through cloth. Remember the analogy between a jabbing needle and piercing perception, and you will readily recall the history of acumen. Our English word retains the spelling and figurative meaning of its direct Latin ancestor, a term that literally means "sharp point." Latin acūmen traces to the verb acuere, which means "to sharpen" and is related to acus, the Latin word for "needle." In its earliest English uses, acumen referred specifically to a sharpness of wit. In modern English, it conveys the sense that someone is perceptive enough to grasp a situation quickly and clever enough to apply that ability.