boon 1. n. 1. A benefit bestowed, especially one bestowed in response to a request. 2. A timely blessing or benefit: A brisk breeze is a boon to sailors. [Middle English.
Quantum leaps are the sole cause of the emission of electromagnetic radiation, including light, which occurs in the form of quantized units called photons. Ironically, when laymen use the term colloquially, they use it to describe large jumps in progress, when in reality a quantum leap is a very small change of state.
Now, in many ways, the vertical leap in the NBA draft is the equivalent of the 40-yard-dash time in the NFL draft: a nice handy benchmark, but not indicative in and of itself as a barometer for future success.