The latest blog posts to take off on Hacker News. 131 posts.
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Introduction The aim of the book, Why We Sleep, is to provide the general public access to a broad collection of sleep research. Below, I address thoughtful questions that have been raised regardin…
This blog post focusses on Chapter 4 about Implicit Priming in Kahneman's book "Thinking" Fast and Slow." A review of the book and other chapters can be found here: https://replicationindex.com/2020/12/30/a-meta-scientific-perspective-on-thinking-fast-and-slow/ Daniel Kahneman's response to this blog…
Science News, Physics, Science, Philosophy, Philosophy of Science
Distances in the expanding Universe don’t work like you’d expect. Unless, that is, you learn to think like a cosmologist.
Note An important acknowledgement for a different view of doing science: open, collaborative, and more than a proof of concept. A few days ago, Loïc Estève, Alexandre Gramfort, Olivier Grisel,...
Radar is one of the most versitile sensors we have to determine what is happening in an environment. Some common applications include air traffic control, weather prediction, automated driver assist, astronomy and terrain mapping. Given that these applications have wildy varying requirements on resolution, range and…
Jacob Collier is the internet’s favorite musical virtuoso. Here’s his mostly acapella arrangement of a Christmas carol called “In The Bleak Midwinter.” The most remarkable p…
That’s an easy go: energy is the amount of (on) my electricity bill, or maybe of (on) my natural gas bill. If I am very concentrated, I might add that it is also the money I spend at the gasoline pump, and if I am even more concentrated I will suggest that it might have something to do with the filling up of my…
Part of my series on common misconceptions in space journalism. It is an unwritten rule of space journalism that any article about Moon or Mars bases needs to have a conceptual drawing of habitatio…
By Michael Nielsen, November 23, 2019
By Michael Nielsen, November 21, 2019
Here I use the word "bound" in the same sense as "bind" in the "binding problem".
Air pollution is a very big deal. Its adverse effects on numerous health outcomes and general mortality are widely documented . However, our understanding of its cognitive costs is more recent and those costs are almost certainly still significantly under-emphasized. For example, cognitive effects are not mentioned in…
Meet the Most Interesting Tunnel Boring Machines
If cement weren't 10,000 years old, it would seem like a futuristic technology: liquid rock!
Peter Denton, Stephen Parke, Xining Zhang, and I have just uploaded to the arXiv the short unpublished note “Eigenvectors from eigenvalues”. This note gives two proofs of a general eige…
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I. The Body Keeps The Score is a book about post-traumatic stress disorder. The author, Bessel van der Kolk, helped discover the condition and lobby for its inclusion in the DSM, and the brief fora…
During the early days of testing for the legendary SR-71 Blackbird there were some harrowing mishaps, the details of which have rarely come to light. On January 25, 1966, test pilot Bill Weaver and Lockheed flight test reconnaissance and navigation systems specialist Jim Zwayer experienced their plane vanishing around…
France’s nuclear energy spending was 60% of what Germany spent on renewables. France gets about 400 Terawatt hour per year from nuclear but Germany gets 226 Terawatt-hours each year. 45 Terawatt-hours of Germany’s renewable power comes from burning biomass which generates air pollution.
The National Organic Program (NOP) is now allowing the cancer-causing herbicide, glyphosate, in “organic” hydroponic production.
Part of my series countering misconceptions in space journalism. Now available in audio form. Starlink, SpaceX’s plan to serve internet via tens of thousands of satellites, is a staple in the…
Science News, Physics, Science, Philosophy, Philosophy of Science
Part of my series on common misconceptions in space journalism. Now available in audio form. SpaceX has been working on some variant of the Big Falcon Rocket for almost a decade, with a publicly an…
How can you be in two places at once When you’re not anywhere at all — Firesign Theater [Note: this is NOT original research. I just read the right book] The famous double slit experime…
