Carlo Rovelli On World Without Space and Time.

This review of Carlo Rovelli‘s work looks interesting, and Rovelli’s small book that’s discussed in it is also available in English but seems impossible to find (What is space? What is time?):

Carlo Rovelli, éminent physicien théoricien et acteur majeur de la science contemporaine, est l’un des inventeurs de la gravitation quantique à boucles. Ces livres sont donc des plongées au cœur de cette extraordinaire théorie qui entend unifier les deux piliers conceptuels de notre science que sont la mécanique quantique d’une part et la relativité générale d’autre part. Mais ils sont bien plus que cela. Ils posent aussi de nombreuses questions dont la portée dépasse très largement la seule physique théorique et contribue à ré-enchanter un certain rapport au monde. Carlo Rovelli parvient, en quelques pages, à convoquer Schubert et Leibniz, à dialoguer avec Anaximandre et Descartes, à déconstruire les dogmes scientistes et à proposer avec la modestie enthousiaste d’un enfant-poète une refondation de la pratique et de la pensée scientifique. Non pas une révolution puisque Carlo Rovelli revendique l’héritage direct d’un large pan de la tradition, mais plutôt un nouveau regard – à la fois plus tolérant et plus exigeant – sur ce que l’on pensait connaître.

Further reading: Carlo Rovelli, “Forget Time” (.pdf)

Eckart Förster’s Essay on Kant, “Transition” and Opus Postumum

As some might have already noticed and I was pretty slow to discover this, some edited volumed available for preview on Google Books sometimes have full essays avaiable for your scholarly interest. May I wholeheartedly recommend this essay by Eckart Förster, “Fichte, Beck and Schelling in Kant’s Opus Postumum” which begins with a nice summary of Kant’s view of science and, specifically, physics? Förster’s contribution to the study of Opus Postumum is well known, of course, and I think in light of the recent discussions of science, realism, so-called correlationism and such, it is important to understand what Kant actually wrote, as opposed to various crude misinterpretations of his philosophy. Kant, as is also well known, began his philosophical career as a philosopher of nature (a philosopher of science would be a good modern designation) and, as Förster, shows in his Introduction to the English edition of Opus Postumum and various essays on the subject, ended his philosophical career working on a manuscript that would complete his system. 

I think Förster’s opening citation from the second preface to the first Critique is essential, as far as I am concerned, in any discussion of the workings of science – because I’m lazy, here’s a text from Norman Kemp Smith’s translation available online: Continue reading

New Science Blog

I came across this intersting blog – check it out. Here’s an example of the post discussing Quantum Mechanics and some of it’s philosophical implications (old theme, I know, but nonetheless still very exciting for yours truly):

Foundational studies of quantum physics hold a deep fascination for anyone interested in questions about the ultimate structure of the world. Quantum mechanics (QM) is now hovering around its 100th anniversary (depending on whether or not you take the work of Planck, Einstein, or Bohr to mark its true birth). Unlike other theories, quantum mechanics has proven to be remarkably elusive in terms of pinning down what truly, absolutely, no-kidding-anymore, really exists.


The Many-Worlds Interpretation seems crazy to a lot of people, physicists and non-physicists alike. Personally, as a theorist of the astrophysical sort, I see its allure but remain suspicious of the enormous commitment it asks. What may be most interesting about it, however, is how, by taking things to an extreme, it raises two of the oldest and deepest questions we can ask:

What truly exists, and what kind of access do we have to it?

New Scientist: Inside the tangled world of string theory.

An interesting conversation with Edward Witten on string theory – my exposure to String Theory is primarily limited to Brian Greene’s entertaining NOVA programs on PBS:

This year Witten is in Europe, on sabbatical at the CERN particle physics lab near Geneva in Switzerland, where the mathematical foundations of reality are about to be rocked by the Large Hadron Collider (LHC). As it happened, he turned up on the day last September that the LHC switched on. “Ed’s very active, so it’s great to have him around,” says Luis Alvarez-Gaume, head of CERN’s theory department. “He’s a genius, it’s as simple as that.”

“Killing Time”

Here’s a link to a rather compelling documentary(can’t get it to embed properly for some reason) about physicist Julian Barbour, who suggests time doesn’t exist in his book The end of Time.   He’s also rather interested in some of Leibniz’s ideas.  Papers available on his website.  Check it out…

Missions In Space-Time.

I found this to be pretty interesting – check it out:

Nature Video presents five short films on the future of physics. Recorded at the 2008 Nobel Laureate Meeting in Lindau, these films capture the conversations between young researchers and physics Laureates George Smoot, William Phillips, John Hall, David Gross and Gerardus ‘t Hooft. Join them as they grapple with universal ideas including dark matter, dark energy, the Large Hadron Collider, space-time and quantum computing.