Posts Tagged ‘history’

1493

Sunday, January 29th, 2012

Book review: 1493: Uncovering the New World Columbus Created, by Charles C. Mann.

This book is about the globalization triggered by Columbus. The book’s jacket describes this set of changes as “the most momentous biological event since the death of the dinosaurs”. But that was probably written by a poorly informed marketing person. The contents of the book promote a more plausible claim that the effects were bigger than most realize.

Some of the ideas that this book reports are surprising, potentially important, but also somewhat speculative. E.g. large-scale reforestation resulting from smallpox killing existing inhabitants apparently contributed to the little ice age by sequestering carbon.

Much of the book is devoted to the spread of non-human species, but there are long sections on slavery, including speculation about how cheap land might have made slavery more important, and how the differences between Algonkian and Mississippian Indian cultures may have affected attitudes toward slavery in northern and southern U.S.

The first quarter of the book seemed well written, but the remainder of the book wanders through anecdotes of unclear importance. If I’m trying to focus on long-term effects of the globalization that Columbus triggered, why should I care about the details of numerous battles?

The book might come closer to living up to the jacket’s hype if it argued that Columbus caused the industrial revolution. But Mann seems confused about what the industrial revolution was – he treats rubber as a necessary component of the industrial revolution, but that happened well after experts say the industrial revolution started.

It wouldn’t be hard to use the ideas in this book to generate speculation that Columbus caused the industrial revolution, e.g. the potato’s ability to feed several times as many people as wheat, as well as cheaper security due the difficulty of stealing potatoes which are left in the ground until needed, made more people available to invent technology, and might have generated wealth and predictability that enabled inventors to focus on more distant rewards. But my guess is that this is only a small part of what caused the industrial revolution.

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Greatness

Tuesday, June 23rd, 2009

Book review: Greatness: Who Makes History and Why by Dean Keith Simonton.

This broad and mediocre survey of psychology of people who stand out in history probably contains a fair number of good ideas, but it’s hard to separate them from the many ideas that are questionable guesses. He’s inconsistent about distinguishing his guesses from claims backed by good evidence.

One of the clearest examples is his assertion that childhood adversity builds character. He presents evidence that eminent figures were unusually likely to have had a parent die early, and describes this as the “most impressive proof” of his claim. He ignores the possibility those people come from families with a pattern of taking sufficiently unusual risks to explain that evidence.

In other places, he makes mistakes which seemed reasonable when the book was published, such as “Mendelian laws of inheritance are blind to whether an individual is first-born or later-born” (parental age has a measurable effect on mutation rates).

He avoids some of the worst mistakes that a psychology of history could make, such as trying to psychoanalyze individuals without having enough information about them.

He mentions some approaches to analyzing presidential addresses and corporate letters to stockholders, which have some potential to be used in predicting whether leaders have the appropriate personality for their jobs. I wonder what would happen if many voters/stockholders demanded that leaders pass tests of this nature (I’m assuming the tests can be scored objectively, but that may be shaky assumption). I’m confident that we’d get leaders with rhetoric that passes those tests. Would that simply mean the leaders change their rhetoric, or would it be hard enough to maintain a mismatch between rhetoric and thought patterns that we’d get leaders with better thought patterns?

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Historical Dynamics

Wednesday, May 20th, 2009

Book review: Historical Dynamics: Why States Rise and Fall by Peter Turchin.

Turchin uses the tools and perspective of population biology to model some important aspects of the growth and collapse of empires. The relatively dry and mathematical style of the book makes it slow reading, but it leaves less ambiguity than most books about history. He has no obvious political biases – it often seems that his main bias is a preference for the tools of biologists over the tools of historians.

One important aspect of his approach is that it models the dynamics of a feature that is roughly described by terms such as solidarity, trust, and cooperation. He convinced me that he has described some of the influences that cause that feature to increase and decrease (the section title “Frontiers as incubators of group solidarity” says a good deal about his model).

Some aspects of the book left me wondering whether his eccentric worldview added anything to my understanding of history, but occasionally he comes up with ideas that have implications that are clearly new to me, such as his suggestion that monogamy can help an empire continue it’s expansion for a longer time.

He makes some serious attempts to test his models against the available data. It’s hard to tell whether enough data is available to adequately test such ambitious claims.

The biggest limitation of the book is that he assumes Malthusian conditions. While it is likely that some of his analysis applies to the industrial world, he thinks it’s premature to ask how much of it applies today. That means it ought to be of interest mainly to historians for now.

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Economics of Piracy

Tuesday, May 5th, 2009

Book review: The Invisible Hook: The Hidden Economics of Pirates by Peter Leeson.

This is an interesting history of early eighteenth century pirates with an economist’s insights into what influenced them to have institutions such as democracy and to be in many ways pleasanter to serve on than commercial or military ships of the same time.

He has a fairly open bias toward portraying pirates favorably. I sometimes wondered whether there’s enough evidence to support his sometimes surprising conclusions. He makes plausible claims to be getting his historical information from the relevant experts, but without careful checking I can’t tell whether he has slanted his story to make it more entertaining.

He describes some good reasons why “workers’ democracy” doesn’t work as well in modern corporations as it did on pirate ships. But he is too willing to accept the observed absence of corporate democracy as evidence of its inefficiency. I can easily imagine that managers grab more power than is good for the company, and that principal-agent problems let them get away with it (pirates’ relations with the law made it easier for them to remedy this via mutiny). Also, he overstates the claim that “workers don’t have the finances required” for worker ownership of corporations. There are plenty of companies with low enough capital requirements for this to be unimportant. The big difference I see between modern corporations and pirate ships is that pirates had strong reasons to stick together until their venture got enough loot for them to all retire at once and divide the results. Employees in modern corporations want much more flexibility in when they leave the company, which creates complications for workers’ democracy or for the employee who wants to leave however it is handled.

One analysis whose absence disappointed me was whether the long-term benefits to joining a pirate ship were better than those of commercial or military ships. What fraction of pirates retired wealthy? How many of them were fooled by a temporary shortage of law enforcement into adopting a career with an abnormally high death rate once governments increased law enforcement?

He occasionally digresses into standard economics rants that have no relevance to pirates, such as the two pages on lobbyist rent-seeking.

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The 10,000 Year Explosion

Sunday, March 15th, 2009

Book review: The 10,000 Year Explosion: How Civilization Accelerated Human Evolution by Gregory Cochran and Henry Harpending.

This provocative book describes many recent genetic changes in humans, primarily those resulting from the switch from hunter-gatherer lifestyles to agricultural lifestyles. Large changes in diets and disease are the simplest causes of change, but the book also describes subtler influences that alter human minds as well.

I had believed that large populations rarely evolve very fast due to the time required for a mutation to spread. This is true for mutations which provide negligible selective advantage, but the book shows that it’s plausible that a number of mutations have recently gained a large enough selective advantage that the rate at which they become widespread is only modestly dependent on population size. Also, the book makes a surprising but plausible claim that the larger supply of mutations in large populations can mean large populations evolve faster than small populations.

The book is occasionally not as rigorous as I would like. For instance, the claim that Ashkenazi “must have been exposed to very similar diseases” as their neighbors is false if the diseases were sexually transmitted.

Most of their claims convince me that conventional wisdom underestimates how important human genetic differences compared to cultural differences, but leave plenty of room for doubt about the magnitude of that underestimation.

They provide an interesting counterargument to the claim that differences within human populations are larger than the differences between populations. Their belief that differences between populations are more important seems to rest on little more than gut feelings, but they convince me that the conventional wisdom they’re disputing is poorly thought out.

They convinced me to take more seriously the possibility that some Neanderthal genes have had significant effects on human genes, although I still put the odds on that at less than 50 percent.

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