CAMDEN, SC—Two minutes into the interaction, David Linn ran out of questions to ask coworker Ron Marcone's 4-year-old son Luke. "I asked him his name, his age, if he has any brothers or sisters, if he's started school, his favorite food, what he wants to be when he grows up, and at least 20 things about the truck he was playing with," Linn said Monday. "After that, I just hit a wall." Linn added that he has newfound respect for Bill Cosby.