Add to ORKGAbstract: As the most recently discovered and heaviest quark, the top presents us with theoretical challenges. How are we to understand its properties within the larger eort to explain the origins of electroweak and flavor symmetry breaking? This talk discusses some of the surprises the top quark may have in store for us and indicates how experiment may help us pinpoint the truth about top. Dedicated to R.J. Simmons. Since discovering the top quark in 1995 [1], the CDF and D experiments have measured several of its properties with increasing accuracy1. These include the top quark’s mass, production cross-section, and decay fraction to b quarks. The collaborations have also begun studying charac-teristics such as the single-top production r...