Click here to subscribe to print for your office or home. Even after agreeing to break his silence after 25 years, Joe Liemandt is still reluctant to talk about himself. It’s hard to get him to relive Trilogy, the enterprise software company he founded in 1989, which by age 27 put him on the cover of Forbes, twice, as America’s youngest self-made centimillionaire. He isn’t keen to expound on SalesBuilder, Trilogy’s flagship expert system from the 1990s and the world’s first billion-dollar artifi...