If you look at George Ellis’s Google Scholar, it’s clear that he has gone down the deep end a while ago. What is it with these cosmologists? (Ahem, Penrose). Suddenly they discover quantum physics and it’s the solution to consciousness. Or gravity makes wavefunctions collapse.

Instead of trying to resolve in general this problem of how macroscopic clas-sical physics behavior emerges in a measurement process, one can adopt thefollowing two principles as providing a phenomenological description of whatwill happen, and these allow one to make precise statistical predictions usingquantum theory

Principle (The Born rule). Given an observable O and two unit-norm states|ψ1〉 and |ψ2〉 that are eigenvectors of O with distinct eigenvalues λ1 and λ2O|ψ1〉 = λ1|ψ1〉, O|ψ2〉 = λ2|ψ2〉the complex linear combination statec1|ψ1〉 + c2|ψ2〉will not have a well-defined value for the observable O. If one attempts tomeasure this observable, one will get either λ1 or λ2, with probabilities|c21||c21| + |c22|and |c22||c21| + |c22|respectively.

Axiom (States). The state of a quantum mechanical system is given by a non-zero vector in a complex vector space H with Hermitian inner product 〈·, ·〉.

Weyl’s insight that quantization of a classical system crucially involves un-derstanding the Lie groups that act on the classical phase space and the uni-tary representations of these groups

i just wanted to interject that uh could i come at this point carlo i would like to insist a bit on this because i'm i'm not quite clear 01:07:22 on whether you are agreeing or not on the question of the mind um thank you this is also i wanted to ask him the same question mario uh so by just raise the question 01:07:40 specifically all right so let me okay since we're talking about nagarjuna now i would also like to uh read some simple verses that he has and get from both from barry and you what do you 01:07:53 think so this is from chapter three examination of the sentences seeing hearing smelling tasting touching and mind are the six sense faculties their 01:08:04 spheres are the visible objects etc like the scene the herd the smell that tasted and the touched the hair sound etc and consciousness should be understood so actually i'm confused from both of 01:08:18 you first of all barry is the mind anything special in buddhist philosophy or is it just like seeing and hearing and carlo are you saying there is anything 01:08:31 special about them right

The notion that counting more shapes in the sky will reveal more details of the Big Bang is implied in a central principle of quantum physics known as “unitarity.” Unitarity dictates that the probabilities of all possible quantum states of the universe must add up to one, now and forever; thus, information, which is stored in quantum states, can never be lost — only scrambled. This means that all information about the birth of the cosmos remains encoded in its present state, and the more precisely cosmologists know the latter, the more they can learn about the former.

The new experiment shows that, in a quantum world, two people can end up disagreeing about a seemingly irrefutable result, such as the outcome of a coin toss, suggesting something is amiss with the assumptions we make about quantum reality.

Frauchiger and Renner came up with their thought experiment, which is an extension of something the physicist Eugene Wigner first dreamed up in the 1960s.