I wonder how different the book would be if it written today, though, because we are currently in the midst of a market correction based on statistical analysis agreeing with long held scouting beliefs. Defense is at a premium while high strikeout sluggers are struggling to find offers, and this charge is being led by the "smart teams" that Lewis would espouse are doing things the right way.
The Mariners focus on defense under Jack Zduriencik is a well known story by now. But, they aren't the only ones heading that direction. The Boston Red Sox signed Mike Cameron to replace Jason Bay and have made their interest in Adrian Beltre well known. The A's signed Coco Crisp and currently have an outfield with three center fielders penciled in as starters. Defensive specialists Adam Everett, Alex Gonzalez, Jack Wilson, Placido Polanco, and Pedro Feliz have all signed, while the guys who provide value with their bats are still sitting on the market.
The teams that use statistical analysis the most are doing what their scouts have been recommending for years. Stats geeks are validating the insights of scouts. If Lewis was following the game right now, documenting stories from inside a "smart" front office, the tone would have to be dramatically different, even if the point was still the same - good teams spend money on undervalued assets.