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In hospital operating rooms and intensive care units, propofol is a drug of choice, widely used to sedate patients for their comfort or render them fully unconscious for invasive…


Propofol works quickly and is tolerated well by most patients when administered by an anesthesiologist.

But what’s happening inside the brain when patients are put under and what does this reveal about consciousness itself?

Investigators at Michigan Medicine, who are studying the nature of consciousness, have successfully used the drug to identify the intricate brain geometry behind the unconscious state, offering an unprecedented look at brain structures that have traditionally been difficult to study.

Learn maths and science on Brilliant! If you use my link, the first 30 days are free, plus you get 20% off the annual premium subscription ➜ https://brilliant.org/sabine.

I got a bunch of requests to comment on a new attempt at a theory of everything that supposedly combines quantum physics with general relativity. I had a look, and this is a quick comment. First reaction, basically. Didn’t get far in the paper, as you will see. I am sorry in case I appear unkind, but this kind of stuff really pisses me off.

The paper is here: https://www.sciencedirect.com/science

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A brief explanation of how superfluid dark matter can combine fluid dark matter and modified gravity.

For galaxy clusters and for the cosmic microwave background, dark matter matter is the better explanation. But to explain galactic rotation curves and other properties of galaxies, modified gravity is the better explanation.

Until now, physicists have taken an either-or approach. In this video I argue that the answer may be a combination of both. This idea may be realized through dark matter which forms a superfluid. In this case dark matter has two phases, a normally fluid phase and a superfluid phase. In the latter phase, it has no internal friction and appears like modified gravity.

Taken together, so I argue, this explains the existing data best.

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