Via Arts and Letters Daily and WSJ.com:
The point, according to Samuel Arbesman, an applied mathematician and the author of the delightfully nerdy "The Half-Life of Facts," is that knowledge—the collection of "accepted facts"—is far less fixed than we assume. In every discipline, facts change in predictable, quantifiable ways, Mr. Arbesman contends, and understanding these changes isn't just interesting but also useful. For Mr. Arbesman, Wolf's copying mistake says less about spinach than about the way scientific knowledge propagates.
Points:
- “Mr. Arbesman's interest in the spread of knowledge also leads him to the story of Brontosaurus, the lovable, distinct herbivore we all grew up with—only it never existed.”
- “Knowledge, then, is less a canon than a consensus in a state of constant disruption. Part of the disruption has to do with error and its correction, but another part with simple newness—outright discoveries or new modes of classification and analysis, often enabled by technology.”
- “Mr. Arbesman illustrates the speed of technological advancement with examples ranging from the magnetic properties of iron—it has become twice as magnetic every five years as purification techniques have improved—to the average distance of daily travel in France, which has exponentially increased over the past two centuries.”
Ponder:
- “…seems to overstate the predictive power of mathematical extrapolation. Still, he does show us convincingly that knowledge changes and that scientific facts are rarely as solid as they appear.”
- “If shaky claims enter the realm of science too quickly, firmer ones often meet resistance.”
Practice: “What is to be done? The right response, according to Mr. Arbesman, is to embrace change rather than fight it.”
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