Field Notes on Science and Nature A Book by Michael R. Canfield www.hup.harvard.edu An endless living worldWhy Sketch?Letters to the FutureOne and a Half Cheers for List-KeepingLinking Researchers Across Generations+8 More The Student, The Fish, and Agassiz
Economy of material and labor Whatever the comparative merits of [various bed framing methods], what is clear from Aristotle's Mechanica is that economy of material, and labor, was as much an issue in ancient times as it is now. Henry Petroski, The Evolution of Useful Things The requirements of economyThe art of not constructing simplicity