Contributor(s): Matthew Syed, Dr Michael Muthukrishna | Playing on the phrase “a theory of everything” from physics, Michael Muthukrishna discusses his ambitious, original, and deeply hopeful book A Theory of Everyone, which draws on the most recent research from across the sciences, humanities, and the emerging field of cultural evolution to paint a panoramic picture of who we are and what exactly makes human beings different from all other forms of life on the planet.