Sunday, June 26, 2011

Recent reading


During May and June, I finished the following books (click the links for my reviews, some of which are quite brief, and one quite lengthy):
That’s one novel, three collections of short stories, and the rest non-fiction of various kinds.

This has been an enjoyable exercise, but I think it’s time to stop blogging every book I read.

Friday, June 24, 2011

Social Understanding: a book review


Social Understanding: On Hermeneutics, Geometrical Models and Artificial Intelligence by Jürgen and Christina Klüver

Lately, I’ve been enjoying Social Understanding: On Hermeneutics, Geometrical Models and Artificial Intelligence by husband-and-wife team Jürgen Klüver and Christina Klüver (née Stoica).

Believing in a soul, I don’t think the dreams of strong AI can be realised. There will be no Terminator and no Data. However, it’s fun to see how far you can go, and the Klüvers (who I met in 2002) have a particularly interesting approach based on neural networks, which is broader than that of many other AI researchers.

Unlike the Klüvers’ previous work, however, this new book has a little less technical detail and a little more discussion than I would prefer. I would also have liked to have seen Stacy Marsella’s excellent work on emotion incorporated into the framework being developed. Nevertheless, it is one of the most interesting AI books I’ve read in a long while.


Social Understanding by Jürgen and Christina Klüver: 3½ stars

Thursday, June 23, 2011

They're right... sort of


These people are certainly right in saying that carbon dioxide is not a pollutant. This is not a topic where a moralistic tone (oxygen good! CO2 bad!) is helpful. Carbon dioxide is an essential part of Earth’s atmosphere, produced (in part) by natural means, and the general populace can see through crass attempts to demonise it.

The real debate, however, is a quantitative one: what are the appropriate levels of CO2 in the atmosphere? And here there is indeed evidence that the (anthropogenic) increase in CO2 from 280 ppm to 380 ppm (and climbing) is (together with methane and other gases) having undesirable consequences, and that people ignore this increase at their peril. Please, let’s have a rational discussion about that.

Wednesday, June 22, 2011

Climate Change: my two cents

Since everybody else is blogging about it...

CO2 levels are increasing

The amount of carbon dioxide in the atmosphere has been going up ever since we started burning carbon-containing coal and oil. We know this from several independent measurements. It seems that natural mechanisms which absorb CO2 can’t keep up.

CO2 is a greenhouse gas

We’ve known this for ages. And up to a point, this warming effect of carbon dioxide is a good thing. Is it now too much? That’s the $64,000,000,000 question.

Global temperatures result from a combination of factors

Carbon dioxide, methane, and other greenhouse gases warm the atmosphere, while volcanic ash and particulate pollutants cool the earth by reflecting sunlight away.

There seems to be a net warming

It seems that the net result of all the natural and anthropogenic effects over the past century has been an average warming of about half a degree. There has been some debate about the massaging of raw data that is involved (ocean temperatures taken in the 1800s from samples in canvas buckets tend to be a little on the low side, for example), but the raw data shows the same pattern (as in this graph of temperatures in Hobart, Tasmania). Of course, this trend is superimposed on ups and downs due to cyclic factors, like El Niño.

Sea levels are rising

Sea levels have been rising fairly consistently by about 2mm per year (or 1 metre every 500 years). This represents a serious long-term problem for some countries, but not an immediate crisis.

CO2 is mostly emitted by the “big five”

Together, China (22%), the USA (20%), the European Union (14%), Russia (6%), and India (5%) account for more than two-thirds of world CO2 output. No substantial change is therefore possible without their participation.

More science needs to be done

Given the importance of the atmosphere, and the potential impact of things like increased storm activity, a better understanding of the phenomena would be a good thing. The fit of climate models to data can obviously be improved.

Prudence suggests doing something now

Reducing CO2 (and, even more so, methane) is probably a good thing (although rather pointless if the “big five” aren’t involved), but the best actions are probably those which also have other benefits (like weaning people off cars and onto public transport, and planting trees). I must say, I see no argument for Australia’s proposed “carbon tax,” which seems likely to simply move carbon emissions to other countries, rather than reduce them. But if the world does nothing, the resultant climatic changes are unlikely to be good.

Tuesday, June 21, 2011

Ukridge: a book review


Ukridge by P.G. Wodehouse

I’ve just finished this collection of short stories by P.G. Wodehouse.

‘Laddie,’ said Stanley Featherstonehaugh Ukridge, that much- enduring man, helping himself to my tobacco and slipping the pouch absently into his pocket...

Funny, but basically Jeeves and Wooster without Jeeves or Wooster – so not as funny as it could be.


Ukridge by P.G. Wodehouse: 3½ stars

Monday, June 20, 2011

Sovereign: a book review


Sovereign by C.J. Sansom

Consider the political power of Barack Obama (and the debate over birth certificates). Add the personal wealth of Bill Gates and the morals of Hugh Hefner, and you get an approximation to Henry VIII, in whose reign this detective thriller by C.J. Sansom is set. Specifically, the action takes place in London and York, in 1541.


As with the other books in this series, it was un-put-down-able. However, many of the characters were extremely vile. At times, I felt as if I was walking through some of the ghastlier pages of the Inferno. The research behind the novel is excellent, however, although this book is not for the squeamish. See here for a detailed analysis by a historian from York.


Sovereign by C.J. Sansom: 4 stars

Tuesday, June 14, 2011

A Good Man is Hard to Find: a book review


A Good Man Is Hard to Find and Other Stories by Flannery O’Connor

Recently, I was very kindly given a copy of A Good Man Is Hard to Find and Other Stories by Flannery O’Connor – an author I had heard many good things about.

Stories included in this collection are:Most of these stories are in the “excellent but disturbing” category. And by “disturbing” I mean “rip your guts out.”

Some lines that struck me:

Finally, far downstream, the old man rose like some ancient water monster and stood empty-handed, staring with his dull eyes as far down the river line as he could see.

The girl had taken the Ph.D. in philosophy and this left Mrs. Hopewell at a complete loss. You could say, ‘My daughter is a nurse,’ or ‘My daughter is a schoolteacher,’ or even, ‘My daughter is a chemical engineer.’ You could not say, ‘My daughter is a philosopher.’ That was something that had ended with the Greeks and Romans.

He was going to Bible school now and when he finished he was going to start him a church. He had a strong sweet voice for hymns and could sell anything.


A Good Man Is Hard to Find and Other Stories by Flannery O’Connor: 4 stars

Saturday, June 11, 2011

Impossible Things: a book review


Impossible Things by Connie Willis

I’ve just re-read Impossible Things by Connie Willis – my favourite science-fiction author (and a Christian).

Some of the themes here are Connie Willis favourites: “In the Late Cretaceous” and “At the Rialto” touch on the scientific process, as Bellwether did so well, while “Jack” touches on some of the same themes as Blackout/All Clear (which I reviewed last year). Time, destiny, and first contact with aliens are also favourite themes explored in this collection.

This collection includes award-winning stories like “The Last of the Winnebagos” and “Even the Queen.” However, I preferred “Spice Pogrom” and “At the Rialto” in this collection, and I prefer her novels and her other collections (such as Miracle and Other Christmas Stories) to this one. It’s still a great book, though.


Impossible Things by Connie Willis: 4 stars

Friday, June 10, 2011

The Secret Life of Birds: a book review


The Secret Life of Birds by Colin Tudge

This description of what birds are and what birds do is, like the curate’s egg, excellent in parts.

I loved some of the descriptions of bird behaviour, but felt the taxonomic chapters were a little tedious, and thought the preaching (pro-climate-change and anti-Christian) added little. The lack of citations was also a great weakness. I’m giving this one two and a half stars.


The Secret Life of Birds by Colin Tudge: 2½ stars

Wednesday, June 08, 2011

Galileo: a book review

I recently received a review copy of Galileo by Mitch Stokes (Thomas Nelson Christian Encounters Series, 2011, 224 pages). I’ve been a fan of this pioneering astronomer and physicist ever since, as a child, I was given Zsolt Harsányi’s novelised biography of him – which left me not only with a passion for Galileo, but also with a passion for the truth at all costs.


Galileo by Mitch Stokes

Galileo’s words of 1612 were almost prophetic of the trials he would face in the last 30 years of his life: “But whatever the course of our lives, we should receive them as the highest gift from the hand of God, in which equally reposed the power to do nothing whatever for us. Indeed, we should accept misfortune not only in thanks, but in infinite gratitude to Providence, which by such means detaches us from an excessive love for earthly things and elevates our minds to the celestial and divine.

Myths about Galileo’s encounter with the Inquisition continue to thrive – it was not, as Stokes correctly points out (p. 125), a Church vs Science conflict, but rather a debate among Christians (of whom Galileo was one – indeed, Galileo eventually became a minor member of the clergy). Nor was Galileo “excommunicated.” Undoing such myths is a worthy cause, although it’s hard to compete with Dava Sobel’s superb book Galileo’s Daughter, let alone the extensive work by Drake and Finocchiaro. Stokes’ book doesn’t attempt to do so, being an introductory book aimed more at teenagers than at scholars.


Galileo Facing the Roman Inquisition, painting by Cristiano Banti, 1857.

The basic facts of this book are correct, and Stokes describes Galileo’s intellectual environment quite well, and in a readable way. Stokes does, however, oversimplify some aspects of Galileo’s life, such as the Dante connection. Scholars did not find the dimensions of Dante’s Hell “recalcitrant” (p. 44) – its depth, at least, is specified in the Inferno. Galileo’s lectures in fact defended the standard commentary by Antonio Manetti (1423–1497) on this classic of Italian literature. Nevertheless, Galileo’s mathematical and literary skills helped clarify some of the issues, and he seems to have been a good public speaker (in modern terms, the kind of person you would get to lecture on the geography of The Lord of the Rings). And perhaps Galileo just liked the poem (it has been suggested that the poem was one of his inspirations). Galileo’s main contribution to Dante studies seems to have been putting together several poetic clues in order to calculate that Satan (whom Dante places in the centre of Hell) would be roughly 1 km (or 0.7 miles) high. Stokes’ suggestion that mathematics is allied with Hell (p. 45) didn’t add much to this anecdote, as far as I was concerned.


Galileo lectured on, among other things, the geography of Dante’s conical Hell.

Stokes unfortunately replaces the simplistic story of Science vs the Church by an equally simplistic story of Galileo vs “the philosophers.” Stokes attributes various motivations to “philosophers,” generally without naming any. It was, in the end, the compatibility or otherwise of Copernicanism with traditional Catholic interpretation of Scripture that got Galileo into trouble. Galileo had plenty of supporters within the Church, but when it came to the crunch, not quite enough – and the cheering from Protestant Holland and England didn’t help much in Rome. In oversimplifying, Stokes also tends to downplay valid criticism of Galileo: in hindsight, Galileo was right, but at the time, failure to observe stellar parallax was indeed a weakness in the Copernican system. Galileo was a great scientist – perhaps the greatest ever – but he wasn’t a perfect one.

Galileo’s greatest relevance to the average Christian today (the series is “Christian Encounters”) probably lies in his Letter to the Grand Duchess Christina, which discusses the relationship between Scripture and Science. This is the letter where Galileo writes: “the glory and greatness of Almighty God are marvelously discerned in all His works and divinely read in the open book of Heaven” (Stokes quotes several lines from the letter, but not that one). This letter is as relevant (and, to some people, as controversial) today as it was when Galileo first struggled to have it printed. Stokes summarises the key points quite well, but I would have liked a little more detail.


In this church, on 21 Dec 1614, one of Galileo’s opponents seriously misused the text Acts 1:11: “Viri galilaei quid statis aspicientes in caelum?” (Galileans, why do you stand looking up into the sky?) – photo by Georges Jansoone.

Given Stokes’ fondness for editorialising, there are some lessons in the story of Galileo that I was surprised he did not draw, such as the important roles that even flawed human beings can play in history, the enormous value of friends when one is going through times of trial (Stokes does briefly discuss the great consolation provided by Galileo’s daughter), and the dangers of arrogance and a hot temper. For example, had he collaborated with Johannes Kepler, Galileo’s work would probably have been even greater (as Stokes points out, Kepler had discovered the “other side” of the puzzle of gravity – that planets travel in ellipses). Had Galileo not loved humiliating his opponents in print, they might not have become such implacable enemies (and Galileo’s life might have been a little easier).

In terms of production, Galileo recognised the importance of pictures in writing (even though typesetting pictures in his day was expensive). His use of the telescope to make drawings of the moon (and of sunspots) helped to revolutionise astronomy. This makes it a little disappointing that Stokes avoids pictures (other than the cover). However, this may reflect a policy of the publisher.


Nobody had seen it like this before: one of Galileo’s published drawings of the moon, as seen through his telescope.

Overall, as a big Galileo fan, I was a just a trifle disappointed by Stokes’ book. As a reader, I thought a little more of the excitement and drama of Galileo’s life could have been captured (this is, after all, the period of history in which The Three Musketeers is set). However, I am sure that at least some teenagers will be as inspired by Stokes’ biography as I was by Harsányi’s, so I’m giving it 3 stars.


Galileo by Mitch Stokes: 3 stars

However, I advise people outside the US to avoid dealing directly with Thomas Nelson; their shipping department does not appear to realise that other countries exist.

Disclaimer: I received a review copy of this book free from the publisher via BookSneeze®. I was not required to write a positive review, and the opinions I have expressed are entirely my own.

Monday, June 06, 2011

Nutrax for Nerves


Having been pointed at this ad from 1933, I was instantly reminded of the “Nutrax for Nerves” campaign in Dorothy Sayers’s wonderful detective novel Murder Must Advertise. Presumably the advertisers cringed at writing copy for “Kaffee-Hag,” but had little choice.

Sunday, June 05, 2011

E La Nave Va


I was recently reminded of the wonderfully crazy bittersweet film E La Nave Va by the great Federico Fellini, and its superb soundtrack. A ship full of opera singers makes for some great moments, including this scene of a “glass harp”:


(the final disagreement here is about whether the “F” is off-key or not).

Saturday, June 04, 2011

Modern Art and the Death of a Culture: a book review


Modern Art and the Death of a Culture by H.R. Rookmaaker

I recently finished this short volume by H.R. Rookmaaker on a Christian response to Modern Art. Parts of the book were excellent, but I didn’t quite understand why Rookmaaker was so down on Monet. I would have liked some more discussion of William Morris too. I’m giving this one three and a half stars.


Modern Art and the Death of a Culture by H.R. Rookmaaker: 3½ stars

Friday, June 03, 2011

“Randomness” post series: summary

I think “randomness” is characterised by a “mixed-upness” of results, laws which constrain this, and the fact that, apart from those laws, the results are unknown to us (but not to God). My recent posts on the subject have been:
  1. Introduction
  2. Randomness and rules
  3. “Random” does not mean “uncaused”
  4. Randomness and God
  5. Randomness and knowledge
  6. Casting lots
  7. Games of Chance
  8. Dice

Randomly dropping needles onto floorboards can be used to estimate the value of pi – as 2r/f, where r is the ratio of needle length to board width, and f is the observed fraction of needles which fall across lines. Try it.