My primary objection to Master Rovelli's is the basis of his physics goes back to the traditional Block Universe, beloved, of Einstein and Michele Besso. Unfortunately, this view gives rise to hypothetical conundrums, specifically, such fictional elements as Time-Ram, as depicted with Dr. Who vying for control of the galaxy against his opposite, The Master (Jon Pertwee v Roger Delgado). Simply visualize two massive, transversable, wormholes that collide just under the speed of light and whola! The Big Rip! Peeking from behind stiffened fingers and...Ok the world is still here! No rip because the cosmos is not a Block snapshot as Rovelli asserts, but appears to be something more akin to fluid dynamics, perhaps a holographic fluid of sorts, maybe?
-----Original Message----- From: smitra <smi...@zonnet.nl> To: everything-list@googlegroups.com Sent: Fri, Apr 2, 2021 4:48 pm Subject: Re: Carlo Rovelli: The Old Fisherman's Mistake On 02-04-2021 22:24, 'Brent Meeker' via Everything List wrote: > On 4/2/2021 1:10 PM, Evgenii Rudnyi wrote: >> Am 02.04.2021 um 20:27 schrieb Brent Meeker: >>> >>> >>> On 4/1/2021 11:39 PM, Evgenii Rudnyi wrote: >>>>> Only philosophically naive neuroscientists reject realism . >>>> >>>> I am sorry, I have not understood your answer. Do you mean that a >>>> person sees red flowers directly? In the same physical location? >>> >>> I don't know what you mean by "directly". >> >> I mean direct vs. indirect realism: >> >> https://en.wikipedia.org/wiki/Direct_and_indirect_realism >> >> >>> We have a theory of how people see red flowers. It involves photons >>> and brain processes andred flowers that are in a location. I'm >>> pretty sure you're familiar with this theory. Do you reject it? >> >> Do you mean the picture from Gray's book? It seems that you reject it, >> not me. I accept this picture and I am just waiting until you accept >> it. >> >>>> >>>> Or you mean that the virtual world that a person sees is similar to >>>> the physical world? >>> >>>> >>>> Do you agree with the virtual world theory or do you reject it? >>> >>> I don't know what "the virtual world theory" is. >> >> The theory you are talking about finishes by excitation of neurons in >> the brain. Hence we must say that what a person sees is the brain's >> reconstruction of the external world. So the person sees some virtual >> world made by the brain, hence the name "the virtual world theory". > > By that interpretation every theory is a theory about a virtual world, > so the word "virtual" is empty. The whole point of any theory or > model is that it's about something else, F=ma doesn't express a theory > about m. Notice that neurons are a theoretical construct as well as > flowers. > > Brent We can make theories about the real world and validate those in experiments, but the brain's neural circuitry has implemented a virtual reality that has evolved to match some important aspects of the natural world, allowing our ancestors to survive. Certain concepts that we experience like the experience of seeing the color red, being angry etc. then only have a meaning at the level of the algorithm the brain is running. While you can still reduce whatever is happening in the brain in terms of the fundamental physical processes, to completely capture the experience, you always need to construct the algorithm from the fundamental physical processes. Saibal -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/ebabb0cd664ab8299880910481cf51c1%40zonnet.nl. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/42370295.226707.1617404896229%40mail.yahoo.com.
