An elite handful of analysts, actuaries, and accountants have mastered Excel, arguably the most important software in the business world. So what do they do in Vegas? They open a spreadsheet. It’s happy hour in Las Vegas, and the MGM Grand casino is crawling with people. The National Finals Rodeo is in town, the NBA’s inaugural in-season tournament is underway, the Raiders play on Sunday, and the U2 residency is going strong at the giant Sphere, so it seems everyone in every bar and at every sl...