Why Buy That Theory?

R. Hoffmann, American Scientist, 91, 9-11 (2003); Arts & Sciences Newsletter 24(2), 3-6 (2003); The Best American Science Writing 2003, Oliver Sacks, ed., Harper Collins, New York, 222-227 (2003); trans. into Portugese in Quemica: Boletim de Sociedade Portuguesa de Quemica, 89, April-June 2003, 63-65.