I notice the same "window" in hip-hop. What MC's really have longevity? Who really makes it past forty? Ppl say the same in golf, mathematics and the stock market. Flash of genius. High circuitry to run that much current. Disagree about the last Marley album- Uprising. That seemed like his last and one of his greatest gifts. One question we might ask-----what does genius look like for the black elder?