Pi-squared Math app made by Irish Man - Memories of Weightwatchers - Got a crutch? - Are airplane seats are getting smaller?

Joe spoke to David Carr the creater of the math app Pi-Squared. Listeners got in touch of their memories of their time with weightwatchers. How do you dispose of old crutches and wheelchairs. A listener gets in touch about how much smaller airplane seats have become over the last few years.