Under this, let’s charitably call it, “interpretation”, the Schrödinger cat analogy makes no sense, surely THE CAT is bloody conscious about ITSELF BEING ALIVE??

Well a good thing to remember re quantum mechanics, Schrödinger Cat is intended as a thought experiment showing how dumb the view on QM was. So it is always a bit funny to see people extrapolate from that thought experiment without acknowledging the history and issues with it. (But I think that also depends on the various interpretations, and this means I’m showing a cheekily high amount of ass here myself).

There are some interesting ideas in that general direction (wrapping Bell inequalities within different new types of thought experiment, etc.), but some of the people involved have done rather a lot of overselling, and now bringing in talk of “AI” just obscures the whole situation. Which was already obscure enough.

To me, the most sneerable thing in that article is where they assume a mechanical brain will evolve from ChatGPT and then assume a sufficiently large quantum computer to run it on. And then start figuring out how to port the future mechanical brain to the quantum computer. All to be able to run an old thought experiment that at least I understood as highlighting the absurdity of focusing on the human brain part in the collapse of a wave function.

Once we build two trains that can run near the speed of light we will be able to test some of Einstein’s thought experiments. Better get cracking on how we can get enough coal onboard to run the trains long enough to get the experiments done.

If you want a serious discussion of interpretations of quantum mechanics, here is a transcript of a lecture “Quantum Mechanics in Your Face” which has the best explanation I’ve ever seen. I’d recommend the first 6 of Peter Shor’s Quantum Computation notes (don’t worry they’re each very short) for just enough background to understand the transcript.

Also there’s a book by Stephen Baxter set in his Xeelee universe which takes this premise for the cult mentality of a terrorist cell

Sorry this doesn’t really add anything, just thought it kinda funny

Yes, the problem with quantum mechanics is it’s not just your Deepak Chopras of the world that get sucked into quantum woo, but even a lot of respectable academics with serious credentials, thus giving credence to these ideas. Quantum mechanics is a context-dependent theory, the properties of systems are context variant. It is not observer-dependent. The observer just occupies their own unique context and since it is context-dependent, they have to describe things from their own context.

It is kind of like velocity in Galilean relativity, you have to take into account reference frame. Two observers in Galilean relativity could disagree on certain things, such as the velocity of an object but the disagreement is not “confusing” because if you understand relativity, you’d know it’s just a difference in reference frame. Nothing important about “observers” here.

I do not understand what is with so many academics in fully understanding that properties of systems can be variant under different reference frames in special relativity, but when it comes to quantum mechanics their heads explode trying to interpret the contextual nature of it and resort to silly claims like saying it proves some fundamental role for the conscious observer. All it shows is that the properties of systems are context variant. There is nothing else.

Once you accept that, then everything else follows. All of the unintuitive aspects of quantum mechanics disappear, you do not need to posit systems in two places at once, some special role for observers, a multiverse, nonlocality, hidden variables, nothing. All the “paradoxes” disappear if you just accept the context variance of the states of systems.