Mark Littlewood, director general of the Institute of Economic Affairs, talking to Raj Patel on the Today Programme:

The free market operates like a perfect rolling referendum, with the prices representing the outcome of millions of individual decisions.

The Adam Smith Institute said something similar a few years back:

Independent providers are nearer to public demand than public authorities can ever be. Their perpetual search for profitability stimulates them to discover and produce what the consumer wants. In that sense the market sector is more genuinely democratic than the public sector. It involves the decisions of many more individuals at much more frequent intervals.

Comment in response to Roger Pielke Jr. accusing Realclimate of becoming 'pathologically politicised':

If I may have a go at articulating why I think you're wrong? First-off, let me see if I've got your argument correct. You say Realclimate have politicised the science, and this is shown because they attack anyone who questions that the science of climate change is certain, like Sen. Inhofe, Fox News etc.

First point: there is probably scientific illiteracy right across the political spectrum - but the truth is, it tends to be right-leaning thinkers who question climate science. If you're interested, I've written about how this affectively hides most left-of-centre scientific illiteracy from climate arguments.

This means that one can imply Realclimate as 'taking a political position' by default. But I think you muddy the picture then: this most emphatically does not mean Realclimate writers are politicizing science. By your reasoning, the only way Realclimate could become politically neutral would be to "even themselves out" by arguing with left-of-centre climate skeptics. Obviously, that's ridiculous: Realclimate cannot be held responsible for who decides to question the science, and it's certainly false to assign them to a political position "by default" in the way you seem to be doing.

Some facts are proverbial bolts of lightening on a dark night, fully illuminating an otherwise hidden landscape. Much chicken in the poultry industry is bulked up with water, increasing its apparent weight by up to 35-40%. The water is held in place with dried animal protein, often beef or pork since they're the cheapest. The illuminating fact is what happens when this practice comes under scrutiny. It's actually legal to water-inflate chicken, as long as the label makes it clear that's happened. But - as a Panorama programme from 2003 revealed - DNA can be tampered with to make its origin undetectable.

"Assuming the world doesn't end, will there come a day when all the music it's possible to write has been written? It's finite isn't it?" - Claire W, via Twitter.

Excellent question. Apologies if I patronise in what follows, I like describing things from the bottom up! Yes, there are a finite number of songs in the universe - with the one condition that no song can last forever. Let's make it more restrictive and say no song can last for more than 5 minutes (though we could choose 20 or 30 mins and come to the same conclusions.)

Given that, though, it turns out it might not make very much difference that its a finite number...

On Wednesday, UKERC is launching its report on peak oil - the ‘assessment protocol’ via that link is a great lit review for the smorgasbord of energy future opinions. UKERC is, as far as I know, the first ‘mainstream’ academic body to examine the peak oil issue.

I’m attempting to incorporate energy into models of food production, though rather than directly asking about peak oil, the model will hopefully say something about what could happen, given x or y energy scenario. The aim is to (try to) keep it simple: most approaches to the problem, e.g. at the Oil Drum can feel a little like you’re being beaten to death with graphs.

John the miller grinds small small,
The king of heaven sees all, all.

In the fourteenth century, the village of Codicote, in Hertfordshire, was owned by St.Alban's Abbey. Michael Wood, in a 2008 BBC4 programme, traces the story of one woman, Christina, through the obsessive record-keeping carried out by the abbot's secretaries.

Stuffed and Starved has an article, written for the The Nation, that compares Bill Gates' Alliance for a Green Revolution in Africa (AGRA, better funded than many government programs) with the earlier post-second-world-war one. (Which was also a magnate-sponsored affair.) In a previous post I said:

The stark facts are difficult to surmount: the Green Revolution turned Mexico from a wheat-importing to an exporting country in 20 years.

Raj Patel's post makes clear why this doesn't say anything useful about whether that helped Mexicans to eat.

I've watched three films about food recently; I'll write about them together at some point, continuing the '3' theme. Right now, I want to raise a glass to one man with a walk-on part in the Austrian film We Feed the World, currently available via Google video and we join Karl Otrok in his four-wheel drive at about 39 minutes.

Karl Otrok is - or, I suspect, was - director of Pioneer's Romania operations. Pioneer is a US-owned seed company, second only to Monsanto. They're owned by DuPont. Karl begins his tale in what appears to be full High Modern mode: contrasting the four-wheel-drive lifestyle of a Pioneer director to the horse-drawn power of much Romanian farming. But while he begins as ambassador for Pioneer - and clings to his company loyalty throughout - we witness a rapid landslide of his veneer of self-belief.

BBC2 aired 'A Farm for the Future' this week. (That was the iplayer link; here's a hopefully permanent download link.) Rebecca Hosking was born on a Devonshire farm and, on returning to it again, she has decided to try and find out how it might be run if the oil starts running out. (She's also done a fine write-up in the Daily Mail - a sentence I'm unlikely to say again in the near future.)

There are many great, graphic images in this, alongside the story of just how reliant on fossil fuels our farming is. A few quick thoughts: she tells us there are 150,000 farmers left - average age 60. "British farming has effectively been left to die." Well - that's what happens in a world of comparative advantage. Other countries can make the food, and we can sell financial servi... oh.

In 1918 the Nobel Prize for Chemistry was given to Fritz Haber: he invented a method for synthesizing ammonia - that is, nitrogen 'fixed' with hydrogen - a chemical vital for organic life. The process was used during the First World War to make munitions: the allies got theirs from South American mines. Without industrial-scale production of ammonia, the war would have been considerably shorter. Verdun, for example - where a service took place today on WWI's 90th annivesary - was bombarded with a hundred thousand shells an hour - an hour! - at the start of the battle. (As well as a hundred thousand gas shells a day: Haber was instrumental in the development of gas warfare. Randomly, I now realise he was the subject of a brilliant Radio 4 play I caught the second half of. His scientist wife committed suicide. If the play is to be believed, this was to shock him into realising the monster he'd become. I buy that: radio 4 fiction will do for me as a factual source.)