Cosmos is a popular science book by Carl Sagan, first published in 1980. It covers a broad range of scientific subjects, including astronomy, biology, and the history of science, presented in an accessible and poetic style. The book served as a companion to Sagan's acclaimed television series, Cosmos: A Personal Voyage.
I know if you know, you've had Sean Carol on here, I think, before. Sure. He has a really um clever comment about the simulation hypothesis that I've sort of been thinking about a little bit. um maybe you call it like Carol's contradiction if you like and it's the idea that if you you know if we are simulated and we ourselves start making our own simulations in the future and those simulations make their own simulations you get this kind of hierarchy and eventually there'll be some bottom level because every time we run a computer it's got a finite amount of computational power so therefore the inhabitants of that computer must necessarily have less computational resources than we do right because we could run a whole bunch of them they live in just one machine, so they only have access to what's in there. So, every level has less and less fidelity, less computational power, and eventually you'd get to a level where it was kind of like um you know, Donkey Kong from the 1980s or something, right? Where simulations are just really crappy. um that it for them it would be impossible to do simulations. So, the I kind of call this the sewer of reality. There must be a sewer, a bottom level where you just lack the resources to do simulations. And if you think about it, most civilizations would in fact live in the sewer because because of the fanning out of this tree, they would be the most populous type of simulation out there. So then you have this contradiction. And the contradiction is that we most likely live in a simulation that can't do simulations, but we're assuming that simulations are possible. That kind of inevitable. Yeah. Yeah, that makes sense. I I kind of think about it the same way I think about intelligent life in the universe. We might be the only ones or we might be the first. It is possible since we haven't observed everything anything else. So this idea that we are the chances I think he said in billions. One in billions. Yeah. That we are not. Yeah. Yeah. It's someone has to be the first, you know. So how do we know it hasn't happened yet? Just because we think it's possible. I don't buy into the idea that we're definitely in a simulation, but I I'm open to it. I'm open to it because it would be in disccernible because you know that virtual reality exists and if you've used some of the new meta stuff, it's getting pretty good, but it's you could tell, but it's getting pretty good. And you can say,
""Carl Sagan is mentioned by name, and the speaker discusses his poetic way of speaking and his "call for humility" regarding alien life. Cosmos is his most famous work and embodies his approach to science communication."