Tag: Science

Testing Everettian quantum mechanics

Neutron spin and associated magnetic dipole field lines.

The Everett theory of quantum mechanics is testable in ways most people don't realize. Before getting into how or why, I think it's important to deal with a long standing issue. Everettian theory is more commonly known as the "many worlds interpretation", a name I use myself all the time. But what's often lost in the discussion … Continue reading Testing Everettian quantum mechanics →

Those inconvenient quantum interference patterns

Are quantum states and the overall wave function real? Or merely a useful prediction tool? The mystery of quantum mechanics is that quantum objects, like electrons and photons, seem to move like waves, until they're measured, then appear as localized particles. This is known as the measurement problem. The wave function is a mathematical tool for modeling, … Continue reading Those inconvenient quantum interference patterns →

Is it just the math?

Black hole - Messier 87, a dark center surrounded by the light of an accretion disk

Scientific breakthroughs often begin with someone saying, "Don't panic. This crazy sounding assumption is just to make the math work." Nicholaus Copernicus, when he developed his theory of heliocentrism (the earth orbits the sun), was operating from a scientific realist view. In other words, he thought his system reflected actual reality, or at least reflected it … Continue reading Is it just the math? →

Is AI consciousness an urgent issue?

Poster for The Creator, showing a soldier with a robot child

AI consciousness seems like an easier thing to ponder when you approach it from a functionalist viewpoint. Sunday I watched the movie The Creator. The premise is a few decades in the future, we've managed to create sentient robots. At first, all seems well, with them being a boon for humanity. Then a nuclear bomb goes off in … Continue reading Is AI consciousness an urgent issue? →

What would randomness in general relativity mean?

A new approach for reconciling general relativity and quantum mechanics proposes adding some randomness in general relativity, making it less deterministic on small scales. For several decades, physicists have been trying to reconcile general relativity and quantum mechanics. These theories, despite each having been empirically validated to several decimal places, contradict each other. The problem … Continue reading What would randomness in general relativity mean? →

Many-worlds, probabilities, and world stacks

In this video, Matt O'Dowd tackles the issue of probabilities in the many-worlds interpretation of quantum mechanics. A quick reminder. The central mystery of quantum mechanics is that quantum particles move like waves of possible outcomes that interfere with each other, until a measurement happens, when they appear to collapse to one localized outcome, the … Continue reading Many-worlds, probabilities, and world stacks →

Integrated information theory as pseudoscience?

It's been an interesting week in consciousness studies. It started with Steve Fleming doing a blog post, a follow up to one he'd done earlier expressing his concerns about how the results of the adversarial collaboration between global neuronal workspace (GNW) and integrated information theory (IIT) were portrayed in the science media. GNW sees consciousness … Continue reading Integrated information theory as pseudoscience? →

Is the question whether spacetime is real, or whether it’s fundamental?

Matt O'Dowd is starting to look at a question I find extremely interesting. What is the ontology of spacetime? A lot of physicists have begun to wonder whether its fundamental, or emergent from something else. Quantum entanglement is the one I'm familiar with, but I understand there are other possibilities. (This video is 26 minutes … Continue reading Is the question whether spacetime is real, or whether it’s fundamental? →