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26 Jan 2023 05:43:01 UTC
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Talents and Testing
A personal recollection about how even the better schools can, with all the best intentions, undo some of the value they do provide in spite of themselves, over the course of years...in less than a day.
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https://www.youtube.com/watch?v=vfsgz7y3dwc
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https://www.youtube.com/watch?v=vfsgz7y3dwc
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video/mp4
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English
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Controlling
VIDEO
CHIAR
chiara-marletto's-the-science-of-can-2
This episode is focussed on the physics content of chapter 1. I explain what the current “conception” of physics is in terms of dynamical laws and initial conditions. I run through a simple example of how equations of motion are used and discuss how this has been, hitherto, the way physics has been done, is done and is expected to continue to be done according to most philosophers and physicists. We then compare this vision of physics to what constructor theory aims to achieve by considering more than just a single thread through the fabric of reality (what was, is and will be) and instead to consider what might have been and might still be. This clearly has implications for knowledge and, again, we hint at the possibility of a physics of epistemology. It also opens up the possibility for physics to address questions about why the initial conditions are the way they are and thus provides a new window into the origins of the universe and the problem of "fine tuning" when it comes to the constant of nature and the form of the physical laws.
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https://www.youtube.com/watch?v=3q7GTjG_qdI
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Created
1 month ago
Content Type
Language
video/mp4
English
VIDEO
LIVES
livestream-3
AMA
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https://www.youtube.com/watch?v=y3xHLyhhqX4
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Created
1 month ago
Content Type
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video/mp4
Controlling
VIDEO
THING
things-that-make-you-go-mmmmm-part-3
Yes, that's plural. Multiverses. I have spoken many times before on this podcast about "the multiverse". Indeed it is a central theme of ToKCast and a thread running through both the Fabric of Reality and The Beginning of Infinity. But here we discuss other kinds of multiverse - Max Tegmark's 4 species of multiverse. To what extent do they count as science? Are they testable? Does that matter? I found this one a lot of fun.
As an alternative to Max Tegmark's work on all this, the lesser known but perhaps more specialised Luke Barnes (@lukebarnesastro on Twitter) focusses on Fine Tuning in cosmology. His website https://letterstonature.wordpress.com/luke/ is prolific when it comes to this issue and he takes on the problem from a vast array of perspectives.
This is Sabine Hossenfelder & Luke Barnes debating "The fine tuning of the Universe: Was the cosmos made for us?" https://www.youtube.com/watch?v=5OoYzcxzvvM
And this is him "against" Sean Carroll: https://www.youtube.com/watch?v=nJEWg1ifUCg These discussions with Luke (a relative unknown) up against "celebrity" physicists can be really interesting for a couple of reasons sociologically. Luke's no-nonsense Aussie attitude against a continental European in the first instance and an American in the second instance is just worth noticing for the subtle cultural differences (very subtle perhaps!) and also because Luke, as I say, is highly specialised on this particular problem of fine tuning of the laws of physics. Sabine and Sean understand the basics of this - but it's not their day to day work. It is Luke's and so that difference is telling at times. Finally here is Luke's discussion with Robert Kuhn of "Closer to Truth" - what I said is my favourite Youtube channel (where you can also find discussions with David Deutsch, Jaron Lanier, Paul Davies and well, almost anyone who's anyone in physics/science/cosmology/philosophy: https://www.youtube.com/watch?v=xY7Ck1y1fx4
Also see his page on the Closer to Truth website which has his background and links to lots of his videos: https://www.closertotruth.com/contributor/luke-barnes/profile Luke may be an Aussie, but I don't actually know him personally - I just happen to think he is a particularly cogent voice on these issues!
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https://www.youtube.com/watch?v=Cxwy02YjhTE
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Created
1 month ago
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video/mp4
English
Controlling
VIDEO
A DEF
a-defence-of-socialism
Just as the title says. This is a defence of socialism. I wanted to make the strongest case I could for socialism: from the economic through to the moral arguments. I am making the case that it is best for those who struggle to exist under socialism.
But if you only read the title or that part of the description, I expect a thumbs down. If you only listen to the first 7 mins and 6 seconds where I do steel-man socialism, I expect a thumbs down.
If you endorse free markets.
On the other hand, if you are pro-socialism, or communism or Marxism - I expect a thumbs down given the following 45 minutes where I refute every single thing I said about what is good about socialism.
So I expect a lot of thumbs down. At the very end - in the last few minutes - I explain why this is a genuine "defence of socialism" and I explain why I chose that title for the video.
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https://www.youtube.com/watch?v=svXLkLzDwTA
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Created
1 month ago
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video/mp4
English
Controlling
VIDEO
STEVE
steven-pinker's-rationality-chapter-4
Some links mentioned in this video:
Pinker lecturing on Rationality: https://www.youtube.com/watch?v=gW43Xaoe0O0
Link to "psychological study" on what people think about meteorological predictions: https://onlinelibrary.wiley.com/doi/10.1111/j.1539-6924.2005.00608.x titled “A 30% Chance of Rain Tomorrow”: How Does the Public Understand Probabilistic Weather Forecasts?”
This video and associated podcast are about Steven Pinker's book "Rationality". Today I am looking at the chapter titled "Probability and Randomness". Well, to be fair: more than "looking" I am doing a close reading...perhaps an excruciating close reading for some. However the book is about rationality and I think we need to be especially careful when explaining this concept to be precise and careful and - yes - perhaps even consistent (as far as is possible).
This episode of ToKCast can be watched or listened to in conjunction with episode number 111 titled "Probability: Reality, Rationality and Risk" because in that episode I summarise David Deutsch's lecture on the topic of probability which brings to bear physical realism to the topic and so what I am doing here is comparing the perspective on "Probability" (and randomness) as described in the book "Rationality" with the perspective on probability as viewed under David Deutsch's realistic conception of the concept given what we know from physics (and philosophy).
Todays episode serves 3 functions: (1) as a close reading (i.e: a critique in places) of how the concepts "probability" and "randomness" are used in the book - sometimes, as I argue in ways that appear to be inconsistent (2) as a summary of much of the good content in the chapter - for example anyone who wants a refresher on the high school mathematics of probability - we go through some of that (this is not meant to be a backhanded comment - it is interesting material!) and (3) as I have already said this version of probability which I might call the "mainstream academic" vision of probability as compared with probability in light of more recent discoveries in physics.
At this point I should also advertise: my newsletter (see episode 112 for details on that) and my Patreon and donations links at www.bretthall.org
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https://www.youtube.com/watch?v=ojR6z6531Mw
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1 month ago
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video/mp4
English
Controlling
VIDEO
PHYSI
physics-is-almost-entirely-the-study-of
It's true!
The eleventh in a series of shorts reflecting on David Deutsch's paper "The Philosophy of Constructor Theory" published here https://link.springer.com/article/10.1007/s11229-013-0279-z and available in full here: https://www.constructortheory.org/portfolio/the-philosophy-of-constructor-theory/ #physics #knowledge #philosophy #epistemology #daviddeutsch #science
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https://www.youtube.com/watch?v=IVYHEl6BvIY
Transaction
Created
1 month ago
Content Type
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video/mp4
English
Controlling
VIDEO
THING
things-that-make-you-go-mmmm-part-2
Here I discuss the "mathematician's misconception" from a number of angles: the confusion between mathematical reality - and our knowledge of that mathematical reality. We also discuss why it is mathematics is effective in the natural sciences, like physics and whether and to what extent physics must reduce to mathematics in some ultimate sense. In the discussion between Sam Harris and Max Tegmark here, they are really probing the border between metaphysics and physics.
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https://www.youtube.com/watch?v=uH6IqbMu0_A
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Created
1 month ago
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video/mp4
English
VIDEO
MATHE
mathematics
What is mathematics? Does it provide us with "epistemological bedrock" - a finally, once and for all certainly true foundation?
What does fallibilism say about any of this? Is mathematical knowledge not immune from error?
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https://www.youtube.com/watch?v=xTQeUHYM3Jc
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Created
1 month ago
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video/mp4
English
Controlling
VIDEO
DIFFE
differentiation-by-first-principles
The basics of calculus
If you would like to support this endeavor, do consider making a one off donation by clicking the “Donate” button on the front page of www.bretthall.org
or you may “subscribe” (contribute automatically each month) - at https://patreon.com/BrettRHall
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https://www.youtube.com/watch?v=yZqNyhPbAn8
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Created
1 month ago
Content Type
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video/mp4
English