# Quite abundant a walk of life

### My editorial

I have just finished writing an article about the link between energy and human settlement. You could have noticed that I have been kind of absent from scientific blogging for a few days. I had my classes starting, at the university, and this was the first reason, but the second one was precisely that article. On Wednesday, I started doing some calculations, well in the lines of that latest line of my research (you can look up ‘Core and periphery’ ). Nothing very serious, just some casual dabbling with numbers. You know, when you are an economist, you start having cold turkey symptoms when you are parted with an Excel spreadsheet. From time to time, you just need to do some calculations, and so I was doing when, suddenly, those numbers started making sense. It is a peculiar feeling when numbers start making sense, because usually, you just kind of feel that sense but you don’t exactly know what it actually is. That was exactly my case, on Wednesday. I started playing with the parameters of that general equilibrium, with population size on the left side of the equation, and energy use, as well as food intake, on the other side. All of a sudden, that theoretical equilibrium started yielding real, robust, local equilibria in individual countries. Then, something just fired off in my mind. My internal happy bulldog, you know, that little beast who just loves biting into big, juicy loafs of data, really bit in. My internal ape, that curious and slightly impolite part of me, went to force the bulldog’s jaws open, but it got fascinated. My internal austere monk, that really-frontal-cortex guy inside of me, who walks around with the Ockham’s razor ready to slash into bullshit, had to settle the matters. He said: ‘Good, folks, as you are, we need to hatch an article, and we do it know’. You don’t discuss with a guy who has a big razor, and so all of me wrote this article. Literally all of me. It was the first time, since I was 22 (bloody long ago), that I spent a night awake, writing. The result, for the moment in the pre-editorial form, is entitled ‘Settlement by energy – can renewable energies sustain our civilisation?’  and you can read it just by clicking this link.

Anyway, now I am in a post-article frame of mind, which means I need to shake it off a bit. What I usually do in terms of shaking off is having conversations with dead people. No, I don’t need candles. One of my favourite and not-quite-alive-anymore interlocutors is Jacques Savary, a merchant and public officer, who, in 1675, two years after both the real and the fictional d’Artagnan had been dead, published, with the privilege of the King, and through the industrious efforts of the publishing house run by Louis Billaine, located at the Second Pillar of the Grand Salle of the Palace, at Grand Cesar, a book entitled, originally, ‘Le Parfait Négociant ou Instruction Générale Pour Ce Qui Regarde Le Commerce’. In English, that would be ‘The Perfect Merchant or General Instructions as Regards Commerce’. And so I am summoning Master Savary from the after world of social sciences, and we start chatting about what he wrote regarding manufactures (Book II, Chapter XLV and XLVI). First, a light stroke of brush to paint the general landscape. Back in the days, in the second half of the 17th century, manufactures meant mostly textile and garments. There was some industrial activity in other goods (glass, tapestry), but the bulk of industry was about cloth, in many forms. People at the time were really inventive as it came to new types of cloth: they experimented with mixing cotton, wool and silk, in various proportions, and they experimented with dyeing (I mean, they experimented with dying, as well, but we do it all the time), and they had fashions. Anyway, textile and garment was THE industry.