“Doubt is our product,” said Bernard Carleton, a louche-looking young man, plucking away at his plate of smoked-salmon canapés. The public relations firm Colton & Touche, whom he worked for, made no bones about the reason for their success. He peered at Richard Lyle Mills. “But I think you know that, otherwise we wouldn’t be here.” He returned to picking at the morsels on his plate. “These are usually my favorites but for some unknown reason I’m off.&rdquo...