Episode 24: Sentinel. Jack sets off for a secret adventure, and discovers an ancient wonder. From Plato's Cave to The Matrix, philosophers and scientists and dreamers have questioned the very nature of reality. Scientists today are actually running multi-million dollar experiments to discover hints on whether or not we are living in a computer simulation. To date, the program obfuscates the results, every time. The world may not be exactly what it seems. There is no body. Data is data.