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How BIG is the universe? Sounds like a simple enough question, but in reality, there are four different ways to answer it, and they're arguably all correct! Today I chat with Future of Humanity Institute philosopher Toby Ord about his recent paper “The Edges of the Universe“. We explore the ways we calculate these different universe boundaries; from the ever-shrinking “affectable“ to the unfathomably giant “ultimately observable“ universe; as well as the ethical implications of space exploration and the far future. Toby's research tries to answer the biggest picture questions facing humanity; from aliens to utilitarian ethics and the potential loss if we were to go extinct. He recently wrote an amazing book called “The Precipice“, which discusses these cosmological dilemmas in detail, so if this is the kind of stuff that tickles your grey matter I *highly* recommend you check it out: Further reading:
