His finger bounces in the air between buttons as he seems to have resorted to the most scientific method of 'eenie-meenie-miney-mo.'

"I think I've got it. I've narrowed it down to this set of controls," Donatello says, breezing over Lauri-Ell's concerns. "Unless for whatever reason it was built with left-handed people in mind. But then the left side doesn't look all that much different from the right side so I'm going with this one."

He reaches over to push a button.