Skip to main content

Once Before Time – Martin Bojowald ***

Physics has a dark secret at its heart. The two big theories that form the main basis of just about everything don’t work together. Quantum theory, dealing with the very small, and general relativity, dealing with gravity and the nature of space-time, are incompatible. Not only does this make it impossible to put together a coherent theory covering, for instance, all forces, it messes up our understanding of events that fit into both camps, like the big bang.
The best known modern attempt to pull the two together is string theory – but this has huge problems as far as making useful predictions goes, and some regard it as a dead end. Its main opposition (though there are other theories) is loop quantum gravity. This breaks down space-time itself into atoms, which have something of a loop-like nature, making reality a kind of weave of these loops.
This theory too has yet to make any useful predictions, and like string theory it depends on mind-twistingly complex maths. Yet it is in some ways simpler, doesn’t need many extra dimensions to make it work and even gets around some of the concerns about infinities cropping up at the big bang.
This means we desperately needed a good, popular science guide to string theory – and sadly we still do. Martin Bojowald is one of the key figures in the field, and certainly has a good grasp on the science, but has real problems with getting the information across. It probably doesn’t help that this book was first written in German, then translated into English by the author – certainly at times you might think it still isn’t English.
The science simply hasn’t been made understandable. The author spends a fair amount of time, for example, on Penrose diagrams. These special space-time diagrams are very useful to help understand what is happening in a black hole and similar oddities of space time. But it is very difficult to grasp what is going on. We are told that the singularity is not timelike, but spacelike – it is part of evolving space at a fixed time. This is shown clearly on the diagram, but we are given no real explanation of why this is so, or what it means.
It doesn’t help that the book is illustrated by fairly meaningless arty photographs and has occasional snippets of very bad fiction (which presumably are harder to translate than the science). All in all it is a frustrating read that is unlikely to be illuminating unless you already know quite a lot about the subject area, but not about loop quantum gravity.
Hardback:  
Also on Kindle:  
Review by Martin O'Brien

Comments

Popular posts from this blog

Einstein's Greatest Mistake - David Bodanis ****

Books on Einstein and his work are not exactly thin on the ground. There's even been more than one book before with a title centring on Einstein's mistake or mistakes. So to make a new title worthwhile it has do something different - and David Bodanis certainly achieves this with Einstein's Greatest Mistake. If I'm honest, the book isn't the greatest on the science or the history - but what it does superbly is tell a story. The question we have to answer is why that justifies considering this to be a good book.
I would compare Einstein's Greatest Mistake with the movie Lincoln -  it is, in effect, a biopic in book form with all the glory and flaws that can bring. Compared with a good biography, a biopic will distort the truth and emphasise parts of the story that aren't significant because they make for a good screen scene. But I would much rather someone watched the movie than never found out anything about Lincoln - and similarly I'd much rather someon…

Four Way Interview - Tom Cabot

Tom Cabot is a London-based book editor and designer with a background in experimental psychology, natural science and graphic design. He founded the London-based packaging company, Ketchup, and has produced and illustrated many books for the British Film Institute, Penguin and the Royal Institute of British Architects. Tom has held a lifelong passion to explain science graphically and inclusively ... ever since being blown away by Ray and Charles Eames’ Powers of Ten at an early age. His first book is Eureka, an infographic guide to science.

Why infographics?
For me infographics provided a way to present heavy-lifting science in an alluring and playful, but ultimately illuminating, way. And I love visualising data and making it as attractive as the ideas are.  The novelty of the presentation hopefully gets the reader to look afresh. I love the idea of luring in readers who might normally be put off by drier, more monotone science – people who left science behind at 16. I wanted the boo…

A Tale of Seven Scientists - Eric Scerri ***

Scientists sometimes tell us we're in a post-philosophy world. For example, Stephen Hawking and Leonard Mlodinow in The Grand Design bluntly say that that philosophy is 'dead' - no longer required, as science can do its job far better. However, other scientists recognise the benefits of philosophy, particularly when it is applied to their own discipline. One such is Eric Scerri, probably the world's greatest expert on the periodic table, who in this challenging book sets out to modify the philosophical models of scientific progress.

I ought to say straight away that A Tale of Seven Scientists sits somewhere on the cusp between popular science and a heavy duty academic title. For reasons that will become clear, I could only give it three stars if rating it as popular science, but it deserves more if we don't worry too much about it being widely accessible.

One minor problem with accessibility is that I've never read a book that took so long to get started. First t…