World's smartest person wrote this one mysterious book

This video is about child prodigy William James Sidis. His father, Boris Sidis, together with William James, developed the idea that people only use a small fraction of their mental potential. William Sidis chose to live a private and independent life, some saw this as a waste of his potential, but this video aims to show that he continued to be a lifelong learner and thinker. The Animate and the Inanimate is one book that he wrote which tackles interesting ideas in physics and the reversibility of the second law of thermodynamics.