#physic #cosmos # [[Epistemic status]] #shower-thought # Fine tuned Universe [[Max Tegmark]] says that the apparent fine tuning of the universe for life, that is, other parameters and constants would prevent life from appearing, means either: >1. Fluke: It's just a fluke coincidence and there's nothing more to it. >2. Design: It's evidence that our Universe was designed by some entity (perhaps a deity or an advanced universe-simulating life form) with the knobs deliberately fine-tuned to allow life. > >3. Multiverse: It's evidence for the Level II multiverse, since if the knobs have all settings somewhere, it's natural that we'll exist and find ourselves in a habitable region. What if we are running in a [[Genetic Algorithm]] as the population 42 which is the only one having parameters enabling life? >Scientists are slowly waking up to an inconvenient truth - the universe looks suspiciously like a fix. The issue concerns the very laws of nature themselves. For 40 years, physicists and cosmologists have been quietly collecting examples of all too convenient "coincidences" and special features in the underlying laws of the universe that seem to be necessary in order for life, and hence conscious beings, to exist. Change any one of them and the consequences would be lethal. [Fred Hoyle](https://www.goodreads.com/author/show/199992.Fred_Hoyle "Fred Hoyle"), the distinguished cosmologist, once said it was as if "a super-intellect has monkeyed with physics >~ [[Paul Davies]] ## Only a three dimensional space and one dimensional time universe can allow life >An infinitely intelligent baby could in principle, before making any observations at all, calculate from first principles that there's a Level II multiverse with different combinations of space and time dimensions, and that 3+1 is only option supporting life. >~ [[Max Tegmark]] > We are running in an [[Artificial Life]] and in the very first generation >If you're in a simulation, which generation are you in? The first one, or one of the later ones? >~ [[Elon Musk]] ## The argument from design asserts, first, that the universe is fine tuned to support life, and second, that this fine tuning points to the existence of an intelligent designer. The rebuttal attacked by Hacking consists of accepting the first premise, but rejecting the second on the grounds that our (big bang) universe is just one in a long sequence of universes, and that the fine tuning merely shows that there have been many other (poorly tuned) universes preceding this one # external links https://youtu.be/yDqny7UzyR4