Some guy brought in a old shoe fitting x-ray for Rick to restore. Rick tested it to see what kind of radiation it was putting out and it was off the charts. It made me think of current day body scanners that the slaves are going into and what health problems they will cause for the people walking through them and the TSA that are standing near them all day. I'm sure back in the day it was just a crazy theory that the shoe fitting x ray could make you sick. The yuppies probably laughed at the theorists as they put their kid in the radiation machine so they could get a perfect shoe fit.