From the category archives:

Wrong!

High-school civics and minds,
1890 and now

September 2, 2010

A comment on my recent post, “The problem: a metacognition deficit,” reminded me of a striking illustration of cultural change, the level of the language and content of a book used in the 1890s to teach high school civics (available in plain text, a big pdf and simulated in-browser book ). It reeks of a [...]

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The problem: a metacognition deficit

August 27, 2010

…there’s a metacognition deficit. Very few in public life habitually step back and think about the weakness in their own thinking and what they should do to compensate…
Of the problems that afflict the country, this is the underlying one.
David Brooks, (“A Case of Mental Courage”, New York Times)
Brooks begins with the story of how [...]

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Super Battery!!!

July 14, 2010

A benchmark for judging hype:
WSU Researchers Use Super-high Pressures to Create Super Battery
The researchers created the material on the Pullman campus…The cell contained xenon difluoride (XeF2), a white crystal used to etch silicon conductors, squeezed between two small diamond anvils….The researchers eventually increased the pressure to more than a million atmospheres, comparable to what would [...]

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“The China Study” Considered Harmful

July 11, 2010

An influential study of diet and health has been exploded here. The data and the conclusions don’t just disagree, they aren’t even on speaking terms.

Meanwhile, randomized intervention trials indicate that advice on the perils of saturated fat has been wrong. I suggest some reforms.

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Next up: Asteroids

July 4, 2010

Soon after Earth’s life first touched the Moon, NASA promised to make spaceflight routine and inexpensive, and I began studying the prospects for space as a genuine frontier.
Geologists had analyzed the new, hard-won lunar samples, and I read up on the results in the local college library. Not nice: almost no carbon, nitrogen, or hydrogen, [...]

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Needless Megadeaths:
A Suggestion for Science in the Public Interest

June 16, 2010

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Knowledge and causality in inquiry and design

June 3, 2010

The structure of science and engineering, a big mistake, and a book

See also: “The Antiparallel Structures of Science and Engineering”

An effect may have one possible cause, or many. The weight of a stone has a single cause, gravity, but the flight of a stone coming over a wall could have one of many [...]

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A programmable nanoscale assembly line

May 20, 2010

When I picked up my copy of this week’s Chemical & Engineering News this evening, I found that the lead article begins with this:
Futuristic visions of nanobots that travel the body to treat disease and construct compounds one atom at a time got a little closer to reality this week, thanks to two advances in [...]

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Flattening the Matterhorn

May 19, 2010

Text and graphics excerpted from Figure 4 of a recent paper on a new form of nanoscale lithography:
AFM scan of the replica of the Matterhorn written into the molecular glass (3D data source: geodata © swisstopo).
The maximum steepness of slopes is an important parameter in scanning probe lithography. It would be easy to misread the [...]

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Incentive engineering v. Econ 101
(creativity, criminality, etc.)

April 7, 2010

About a book and a paper…
The economics I encountered (in what were considered to be humanities courses) at MIT presented theories of productive behavior illustrated with graphs of relationships between supply and demand, prices, utilities, consumer surpluses, deadweight losses, and so on. These are elementary parts of the apparatus of neoclassical economics, a soaring [...]

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Chemists deserve more credit:
Atoms, Einstein, and the Matthew Effect

February 17, 2010

Chemists understood the atomic structure of molecules in the 1800s, yet many say that Einstein established the existence of atoms in a paper on Brownian motion, “Die von der Molekularkinetischen Theorie der Wärme Gefordete Bewegung von in ruhenden Flüssigkeiten Suspendierten Teilchen”, published in 1905.
This is perverse, and has seemed strange to me ever since [...]

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Why fusion won’t provide power
(at a reasonable cost)

January 20, 2010

The greatest problem with fusion power is rarely mentioned and scarcely on the research agenda: capital cost. When I discussed the problem earlier, in “Fusion Power: A New Way to Boil Water”, I hadn’t seen this quietly damning report, which I think is worth quoting:

Issues and R&D needs
for commercial fusion energy
An interim report of the
ARIES [...]

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