Skip to main content

Why String Theory? - Joseph Conlon ****

If, like me, you've tended to think of string theory as a way that applied mathematicians and theoretical physicists can have endless fun without ever contributing anything practical to our understanding of the universe, Joseph Conlon's is a useful book to remind us that string theory isn't quite so unlikely and useless as it can seem.

I must admit I've been strongly influenced by anti-string theory books such as Not Even Wrong and The Trouble with Physics. After reading Why String Theory? I have a more balanced view (if still being pretty doubtful of the theory's value). One thing that Conlon does, which I've never never seen elsewhere, is give a detailed description of it how the theory came into being, including the original, 26-dimensional approach that was an attempt to deal with the strong interaction. When this was trumped by quantum chromodynamics, it was almost as if the string theorists were so enamoured with their theory, which has some mathematically beautiful aspects, and a tendency to suddenly fit quite well with other mathematical constructs in physics, that they seem to have a spent a lot of time thinking 'Okay, what can we do with it?' And apart from the possibility of quantum gravity, it's remarkable in how many places it seems to have offered some use, despite its infamous lack of testable predictions to whittle down the vast numbers of potential solutions.

I won't say that this is an ideal popular science title. Like Not Even Wrong, it constantly throws out material that you just have to take the writer's word for being meaningful. It's not that there's heavy maths - there are pretty well no equations - but there's an awful lot you have to take on trust, or glaze slightly as meaningless (to the reader) terms are thrown at you. This isn't helped by a style that sometimes reminds me of a elderly schoolmaster (I was amazed that the author is considerably younger than me) with examples like referring to a person's bottom as a 'derrière' (something my grandma might have done) and throwing in 'crossing the Rubicon of physics' occurring within 2 lines of each other. I'm surprised their weren't Latin tags. Elsewhere we get 'I will, for now, let sobriety be the better part of speculation and be silent whereof I cannot speak...' Note that this is while calling pre-Big Bang ideas 'bad speculation' because they're not based on observation - unlike string theory?

There's also a touch of iffy history of science (we are told that Gell-Mann named the quark after a word in Finnegans Wake, for instance, where it was only the spelling that came from there), and the author rather sneakily compares string theory to astronomy as being 'pursued for the value of intrinsic understanding' rather than anything so grubby as commerce - but doesn't note that at least we know that what astronomers (as opposed to cosmologists) study exists. (Not to mention Conlon being unnecessarily sniffy about practical applications.)

However, I do still recommend this book for everyone who wants to get an up-to-date picture of the state of string theory with a lot of background, and is prepared to take the rather heavy approach, lacking much of an attempt to explain things in words most of us can understand. If, like me, you've tended to the anti-camp, this title (sadly, priced more like a textbook than a popular science title) is a very valuable antidote.

Paperback:  
Kindle:  
Review by Brian Clegg


Comments

Post a Comment

Popular posts from this blog

The Feed (SF) - Nick Clark Windo ****

Ever since The War of the Worlds, the post-apocalyptic disaster novel has been a firm fixture in the Science Fiction universe. What's more, such books are often among the few SF titles that are shown any interest by the literati, probably because many future disaster novels feature very little science. With a few exceptions, though (I'm thinking, for instance, The Chrysalids) they can make for pretty miserable reading unless you enjoy a diet of page after page of literary agonising.

The Feed is a real mixture. Large chunks of it are exactly that - page after page of self-examining misery with an occasional bit of action thrown in. But, there are parts where the writing really comes alive and shows its quality. This happens when we get the references back to pre-disaster, when we discover the Feed, which takes The Circle's premise to a whole new level with a mega-connected society where all human interaction is through directly-wired connections… until the whole thing fails …

The Bastard Legion (SF) - Gavin Smith *****

Science fiction has a long tradition of 'military in space' themes - and usually these books are uninspiring at best and verging on fascist at worst. From a serious SF viewpoint, it seemed that Joe Haldeman's magnificent The Forever War made the likes of Starship Troopers a mocked thing of the past, but sadly Hollywood seems to have rebooted the concept and we now see a lot of military SF on the shelves.

The bad news is that The Bastard Legion could not be classified as anything else - but the good news is that, just as Buffy the Vampire Slayer subverted the vampire genre, The Bastard Legion has so many twists on a straightforward 'marines in space' title that it does a brilliant job of subversion too.

The basic scenario is instantly different. Miska is heading up a mercenary legion, except they're all hardened criminals on a stolen prison ship, taking part because she has stolen the ship and fitted them all with explosive collars. Oh, and helping her train her &…

The Laser Inventor - Theodore Maiman ****

While the memoirs of many scientists are probably best kept for family consumption, there are some breakthroughs where the story is sufficiently engaging that it can be fascinating to get an inside view on what really happened. Although Theodore Maiman's autobiographical book is not a slick, journalist-polished account, it is very effective at highlighting two significant narratives - how Maiman was able to construct the first ever laser, despite having far fewer resources than many of his competitors, and how 'establishment' academic physicists, particularly in the US, tried to minimise his achievement.

On the straight autobiographical side, we get some early background and discover how Maiman combined degrees in electrical engineering and physics to have an unusually strong mix of the practical and the theoretical. Rather than go into academia after his doctorate, he went into industry - which seems to have been responsible for the backlash against his invention, which we…