Some of us think string theory only existed in order to give a bizarre twist to the fine-tuning of our universe and to create a basis for believing that there is an uncountable infinity of universes out there instead. Apart from that, it may be hard to see much point. We shall see.
Paul Sutter: Buchert and a team of astrophysicists have deduced that our cosmos may be multiply connected, meaning that space is closed in on itself in all three dimensions like a three-dimensional donut.
Hossenfelder: If you are standing still and then begin to walk, that does not only change your position in space, it also changes which direction you are going in space-time. You are now moving into a direction that is a combination of both time and space.
Merritt: The most successful competitor is called modified Newtonian dynamics (MOND). Observations that are explained under the Standard Model by invoking dark matter are explained under MOND by postulating a modification to the theory of gravity.
Physicalist philosopher David Papineau is clearly unhappy with the implications of quantum mechanics, as neurosurgeon Michael Egnor sets them out.
Epperson: Quantum mechanics is a physical theory, operative only in a physical universe. To contort it into service as a cosmological engine that generates the physical universe from “nothing” requires that the abstract concept of “nothing” be concretized as physical so that the mechanics of quantum mechanics can function. What’s more, if quantum mechanics is functional enough to generate the universe from nothing, then it’s not really nothing; it’s nothing plus quantum mechanics.
There is no reason to consider our perceptions to be illusions unless there is a more correct perception that we could have at the same level of resolution.
Well, ugly is as ugly does. String theory sounds beautiful but unrealistic.
“It didn’t have to be this way. The charges of the elementary particles in our Universe could have been such that there was no way to unify any two or more of them into a single unified particle. It’s the combination of observational data and mathematics that offers us strong hints that the charges for elementary particles in the standard model aren’t arbitrary, but rather arise by virtue of being embedded into a grand unified theory framework.” But isn’t that an argument for God?
Hawking was looking for a unified theory and Woit thinks the idea is pretty much discredited now: “We now live in an environment where the idea that there may be a deeper, more unified theory has become completely discredited, through the efforts of many, with Hawking playing an unfortunate part.”
If the universe is really similar to a machine learning system, as they suggest, then, no question, it was designed. All machine learning systems are designed. Are the physicists prepared to unpack that?
If quantum measurements must include consciousness, the dualists are correct, says philosopher Angus Menuge: Consciousness exists in its own right.
Dembski agrees that the universe is, at bottom, information but proposes “informational realism” as a sounder approach to unpacking the idea.
Hunter: This is no scientific hypothesis and this video shows why this claim is false.
Would Einstein count birds’ use of magnetic sensing for migration?