The Lifetime Trade April 1, 2002 Dear Investor: Three years ago we had to look dumb when we refused to invest in companies like Pets.com while they soared in make-believe value. In those heady days, people would throw millions at an idea scribbled on a napkin. In the post-Enron present, people are reluctant to sink so much as a nickel into a company like GE. It seems the psychological pendulum may have swung too far again—this time to the other...