Yzabel / July 14, 2018

Lost in Math: How Beauty Leads Physics Astray by Sabine Hossenfelder

My rating: [rating=4]

Blurb:

Whether pondering black holes or predicting discoveries at CERN, physicists believe the best theories are beautiful, natural, and elegant, and this standard separates trusted theories from disposable ones. This is why, Sabine Hossenfelder argues, physics hasn’t made a major breakthrough in more than four decades. The belief in beauty has become so dogmatic that it now conflicts with scientific objectivity: observation has been unable to confirm mindboggling theories, like supersymmetry or string theory, invented by physicists based on aesthetic criteria. Worse, these “too good to not be true” theories are actually untestable and they have left the field in a cul-de-sac. To escape, physicists must rethink how they do physics. Only by embracing messiness and complexity can science discover the truth, not as one might prefer it, but as it is.

Review:

[I received a copy of this book from NetGalley.]

I can’t say for sure that I understood everything in this book, since my knowledge of physics in general is very patchy, but overall, I liked its tone, and its global idea, because I can get why one would be easily led astray by theories that look ‘beautiful’. It’s something that I feel is very human, after all, as we often look for a form of harmony in the world surrounding us, if only to try and make sense of it. Perhaps the fundamental, underlying laws of nature don’t make that much sense, or don’t always look like they do, and so we try to understand them in ways that would reconcile us with an apparent lack of… meaning, maybe? But what if the theories we pursue, albeit ‘pretty’ and nicely wrapped, turn out to be wrong? Shall we keep pursuing those, in the hopes that we just haven’t seen proof yet due to technological limitations, for instance? It seems that the answer to this isn’t so clear-cut. (The LHC being a good example. I’m tremendously excited by the LHC, and what it allowed to prove so far… but while we got the Higgs boson, we still haven’t gotten supersymmetry.)

The book also gave me pointers about things of which I clearly don’t know enough, especially in order to understand where the author comes from, so I know I’ll have to focus on those at some point in order to learn more.

As a side note, I don’t know, but I don’t feel particularly bothered by the ‘ugliness’ of the Standard Model. It may be in part because all I know about it, I learnt on my own, without following the regular cursus, so I never approached it with any specific idea in mind? We’ll see once I’ve studied more.

Conclusion: Definitely interesting, although don’t approach it if you know next to nothing to physics, since some ideas won’t make sense otherwise.