Definition: happening in the spring; fresh, suggestive of youth
Why I Looked It Up
In a history of the RAND corporation:
Years later, RANDites would ruefully acknowledge the futility of attempting to reduce human behavior to numbers, but it was the vernal season of math at RAND, and its analysts were too enamored of computing as the key to human behavior.
The mathematics discipline at RAND was new at the time, and the mathematicians thought could solve every problem.