Why the Universe Makes It IMPOSSIBLE For Any Two Civilizations to Ever Meet
The universe does not prevent civilizations from existing, but it may prevent them from ever meeting. Distance, light speed, and time combine into what physicist Richard Feynman called "absolute walls." Proxima Centauri, the nearest star, lies 4.24 light-years away—a trip taking 6,600 years with current technology. Time dilation means travelers could return to find their world aged 60,000 years. The "Einstein Cage" suggests contact is structurally precluded by spacetime itsel
The skinny
The skinny isn't ready yet — notes appear once the transcript is processed.