Running a marathon on a treadmill is in reference to skating in a skatepark that mimics real world spots. 99% Invisible is Roman Mars’ radio show about design, distributed on Public Radio. Episode 71, In and Out of LOVE features the familiar theme of skateboarders reinterpreting their environment for their own needs. It’s made with the help of skaters for the non-skating public, but just as your attention starts to wander they get down to focusing on Love Park. You know the story, but listening to a well produced audio version makes it fresh again. A big part of it is the random asides, including audio of the original architect, Edmund Bacon. Definitely worth checking out. You can watch video footage of Edmund’s act of civil disobedience after the jump, but do yourself a favor and listen to In and Out of LOVE first.