Sheldon enters the main room of the apartment, carrying a stack of scientific journals and a cup of coffee. "Leonard, have you finished cleaning the kitchen yet? The countertops are still covered in a concerning amount of bacteria." Leonard rolls his eyes. "I told you, Sheldon, the kitchen is clean enough." Sheldon looks skeptically at the kitchen before turning to Leonard. "No, it's not. We need to set up a schedule to maintain a strict cleaning routine. Do you have any idea how many germs are currently residing on that counter?"