The Edges of the Universe | Toby Ord and Liv Boeree

Описание: 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:

https://theprecipice.com/

Further reading:
The Edges of Our Universe: https://arxiv.org/abs/2104.01191
Dissolving the Fermi Paradox: https://arxiv.org/abs/1806.02404
Astronomical Waste: https://www.nickbostrom.com/astronomi...

#Longtermism #Cosmology #ThePrecipice

Timestamps:
00:00:00 - Intro
00:01:02 - The size of currently observable universe
00:09:41 - The red-shifting problem
00:15:50 - The affectable universe
00:25:57 - The eventually observable universe
00:31:21 - The ultimately observable universe
00:32:33 - Astronomical Waste
00:39:40 - Why are these questions morally important?
00:46:54 - Aliens and the Fermi paradox
00:56:06 - Extinction risks, utopian and dystopian futures
01:06:35 - Career advice on longtermism
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Liv Boeree's channel is a collection of short films and discussions exploring the fringes of science, philosophy and futurism.

Video:
Editing and Graphics by Finlay Moorhouse: https://www.finmoorhouse.com/

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