This episode is truly mind-bending – can they work out why they exist at all? Featuring smashed glasses, spooky castles and a truly freaky flash-mob illustration of multiple universes, Why Are We Here? takes the subjects down a rabbit hole of deeply profound realizations. During this process. Stephen Hawking helps them think like philosophers as much as scientists. The end result is that the volunteers have a newfound appreciation of why they are here at all. Along the way, this episode of Genius also explains how the great minds of history reached their conclusions about the nature of the universe. We travel around the world to find out how these breakthroughs were made, and how important they still are, according to the world’s top thinkers.