This is the third in a 3 part series devoted to Chapter 15 of "The Beginning of Infinity" by David Deutsch. All about "The Evolution of Culture", in this part we are looking at the conditions under which a dynamic society can gradually evolve and persist. Importantly we distinguish between rational and anti-rational (not merely irrational) memes. ... https://www.youtube.com/watch?v=lXrh6FQtRwA

The eighth in a series of shorts reflecting on David Deutsch's paper "The Philosophy of Constructor Theory" published here https://link.springer.com/article/10.... and available in full here: https://www.constructortheory.org/por... #physics #knowledge #philosophy #epistemology #daviddeutsch #science ... https://www.youtube.com/watch?v=z5G1qXXjOAY

Everettian quantum theory (i.e: the quantum multiverse) can be tested against other theories - like all collapse models such as the so-called "Copenhagen Interpretation". David Deutsch explained this in this paper: https://boulderschool.yale.edu/sites/default/files/files/Deutsch.pdf in 1984 but it remains poorly understood even after a popular account was given by David in this book by Paul Davies and Julian Brown "The Ghost in the Atom" available here: https://www.amazon.com/Ghost-Atom-Discussion-Mysteries-Quantum/dp/0521457289 Those accounts by David are technical and very much for professional physicists who should consult those either in lieu of this video or in addition to it should questions remain. In this video I attempt to explain a version of the experiment it in terms for a lay person untrained in physics. David has pointed out I did not "didn't explain why Parlox can't remember which path the photon took: it's because he had to reset the mirrors to their original state, and the only way to do that involves connecting them again to his memory of how they were, which wipes it." (quote from @DavidDeutschOxf Twitter). So this needs to be kept in mind when listening. This video is excerpted from a much longer one here: https://www.youtube.com/watch?v=e6C_K18A4f8 which is part of the Multiverse Series here: https://www.youtube.com/playlist?list=PLsE51P_yPQCQqJDb65AIVLads8PKxYuPm which is itself just a small part of the podcast ToKCast found on Youtube here https://www.youtube.com/channel/UCmP5H2rF-ER33a58ZD5jCig and anywhere podcasts are found (Just search for ToKCast). ... https://www.youtube.com/watch?v=QgM9ule0izE

Ayn Rand claims we are "observing the facts of reality" when forming concepts. Here I explain why that is wrong and how facts are things we conclude *only at the end* of a long chain of interpretation. This is an excerpt from an episode to be released after this, also on "objectivist epistemology" and in addition to the previous episode released about "An introduction to objectivist epistemology" by Ayn Rand. ... https://www.youtube.com/watch?v=wTWo1NurpfU