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From: Robbert Glas

Date: 29 July 2017

Subject: A brief history of quantum alternatives

I never react on articles on internet (too few hours in a day) but you've made the exception. What a brilliant sum-up. I strongly suggest to take your place in front of a class room.

Thank you for those kind words. I hope I deserve them.

-- Lee

From: byron p

Date: 29 July 2017

Subject: A brief history of quantum alternatives

I was wondering if you've ever ran across the book "Quantum Philosophy" by the French physicist Roland Omnés. I ran across it a number of years ago by accident and picked it up thinking it would be one of those fun but flawed New Agey books on the subject. It is a bit old (the original French edition is dated 1994), but since he is just doing basically an intro to quantum physics (well, philosophy actually), I think it holds up very, very well. And he does this through a giving a history, starting with Classical logic/math/physics etc before going on the Formalism of the same things and showing just how prevailing theories broke down. He really doesn't begin talking quantum until at least half-way thru the book. And then he is just talking the basics of the physics. He is more interested, really, in the philosophy of science. Two parts in the book that I really like is how he manages to dismiss the Schrödinger Cat problem in less than a page and that there is a chapter titled 'Recovering Common Sense'. But he is not done there. There is a lot more about modern scientific philosophy with, naturally a section on Thomas Kuhn. All in all, a book I truly love that I don't understand just why is not more widely known.

I've seen references to this author, but never read the book. Thank you for the recommendation, I'll keep it in mind.

-- Lee

From: Robert John

Date: 31 July 2017

Subject: Ars Technica

Hello Lee,

Just wanted to write and thank you for the wonderful article, it was a great read, and I thoroughly enjoyed it, and learnt a lot!

All the best

Dear Robert,

I was very pleased to get your kind note. It's always a great satisfaction to learn that the results of my toil are well received!

From: Clayton Erickson

Date: Sat, 13 Oct 2018

Subject: Turbulence and fractals

I just finished reading your article on the problem of turbulence and was wondering if anyone has considered using fractals to help describe turbulent functions. Fractals came to my mind after looking at the images as well as the reading about some of the properties of turbulence. Anyway, thank you for an enjoyable article.


In my very limited understanding of this area, fractal geometry has been used to describe turbulent fields, but, as far as I know, has not led to increased power of prediction. Here is a serious review of the situation as of 1991:


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