I am reminded of an episode of Seinfeld where Jerry gives his dad an expensive, multifunction PDA called "The Wizard" but his Dad doesn't immediately see the us

I am reminded of an episode of Seinfeld where Jerry gives his dad an expensive, multifunction PDA called "The Wizard" but his Dad doesn't immediately see the use. Jerry explains it can do all kinds of things, for example, it has a calculator he can use to calculate tips at restaurants, leading Dad to conclude it's a $200 tip calculator. Jerry keeps protesting "it does other things!" and the old folks act like they can't even hear him.