Like video, but without the picture

At Take Our Daughters and Sons to Work Day yesterday, a radio reporter was asking kids if they wanted to do an interview with him. Apparently some kids expressed confusion about what radio was. His pitch? “It’s like video, but without the picture. There’s only sound.”

I guess for a generation raised entirely on video (even I had significant radio exposure), such an explanation is apropos…but it still seemed strange to describe a simpler technology using a more complex one.