I once was an active chessplayer, but work duties have long taken tournaments off my plate - I simply do not have the time to sit through long hours of chess battles. So I play blitz online on chess.com (my handle is "tommasodorigo", in case you wondered).
Truth is under attack. It has always been, of course, because truth has always been a mortal enemy for those who attempt to seize or keep power in their hands. But the amplification of the phenomenon by today's information technology is extremely worrisome. AI today can generate fake videos and images that even experts have trouble flagging as such. This, combined with the different news value and propagation potential of false information with respect to typically less attention-grabbing true facts has created an explosive situation. What to do?
Today is November 1st, the day dedicated to the dead, and I am in northern Sweden where daylight is scarce this time of the year. The two things conjure to arise thoughts of a darkish nature. [Above, a lousy picture taken this evening in a cemetery in Gammelstad, close to Lulea, in Norrbotten, Sweden. Sorry for the bad quality... Yet the landscape with all those small lights was really inspiring.]
Having interacted for a few months with ChatGPT 5 now, both for work-related problems and for private / self-learning tasks, I feel I might share some thoughts here on what these large models can tell us about our own thought processes. The sentence above is basically giving away my bottomline from square one, but I suppose I can elaborate a bit more on the concept. LLMs have revolutionized a wide range of information-processing tasks in just three or four years. Looking back, the only comparable breakthrough I can recall is the advent of internet search engines in the early 1990s. But as exciting and awesome this breakthrough is, it inspires me still more to ponder on how this is even possible. Let me unpack this.
With this post I would like to present a short update of my personal life to the few readers who are interested in that topic. You know, when I started writing online (over 20 years ago!), blogs used to contain a much more personal, sometimes introspective, description of the owner's private life and actions. Since long, they have been substituted by much more agile, quick-to-consume videos. But the old-fashioned bloggers who stuck with that medium continue to have a life - albeit certainly a less glamorous one than that of today's influencers; so some reporting of personal affairs is not out of place here.
A preambleSubnuclear physics obeys the laws of quantum mechanics,
which are quite a far cry from those of classical mechanics we are accustomed
to. For that reason, one might be inclined to believe that analogies based on
everyday life cannot come close to explaining the behavior of elementary
particles. But that is not true – in fact, many properties of elementary
particles are understandable in analogy with the behavior of classical systems,
without the need to delve into the intricacies of the quantum world. And if you
have been reading this blog for a while, you know what I think – the analogy is
a powerful didactical instrument, and it is indeed at the very core of our
learning processes.
I recently ran into a description of the Mu3e experiment, and got curious about it and the physics it studies. So after giving it a look, I am able to explain that shortly here - I think it is a great example of how deep our studies of particle physics are getting; or, on the negative side, how deep our frustration has gotten with the unassailable agreement of our experiments with Standard Model predictions.Matter stable and unstable in the Standard Model
The neutron is a fascinating particle, and one which has kept experimental physicists busy for almost a century now. Discovered by James Chadwick in 1932 in a cunning experiment which deserves a separate post (it is a promise, or a threat if you prefer), the neutron has been all along a protagonist in the development of nuclear weapons as well as in the extraction of nuclear power from fission reactors. And of more relevance to our discussion here, it has powered endless studies both in the context of nuclear and subnuclear physics.
These days I am organizing a collaborative effort to write an article on holistic optimization of experiments and complex systems. "So what is the news," I could hear say by one of my twentythree faithful readers (cit.) of this blog. Well, the news is that I am making some progress in focusing on the way the interplay of hardware design and software reconstruction plays out in some typical systems, and I was thinking I could share some of those thoughts here, to stimulate a discussion, and who knows, maybe get some brilliant insight.
On August 13-15 I will attend for the first time to the Swedish Physics Days, an important national event for Swedish physics. This year the congress takes place at Lulea University of Technology, the institute where I am currently spending some time, hosted by the Machine Learning group through a Guest Researcher fellowship granted by WASP (Wallenberg AI, Autonomous Systems and Software Program).
In the previous article here, I tangentially examined a situation that arises often in collaborative data analysis: the digestion of the results in scientific graphs. The focus of that discussion was the building of a sceptical thinking attitude in my student - it is a really important asset in experimental science.
Lately I have been writing lots of reference letters for students who are applying to Ph.D. positions in Physics, and in so doing I have found myself pondering on the dubious usefulness of that exercise. So let me share a bit of my thoughts on the matter here.Reference letters are meant to be an important input for academic selections, because they provide first-hand information on the previous experience of the candidates, from scholars who are supposed to be authoritative enough to be trusted, and unconcerned enough to provide a unbiased assessment.
After a month of intense travel, which among other things included attendance to the MODE Workshop in Crete and the EUCAIF conference in Sardinia, I am back to northern Sweden. Besides significantly improving my well-being, given the horrible heat wave that hit Southern and Central Europe in the past few weeks, the move north allows me to finally give a relaxed look back at the most relevant information I gathered at those events, and other relevant things.
