Ever wondered why the period 5th - 15th century AD is considered the "dark ages"?(and not few centuries earlier or later). Why should the idea of Calculus occur to two independent inventors, Newton and Leibniz, at almost the same time frame? In Egypt's Giza plateau, the Pyramid of Khufu is considered the grandest among all other pyramids. Yet it is the oldest. If growth and development is linear, then why is that not a single newer pyramid is not as sophisticated as the Pyramid of Khufu? (the...