Well for me it's not about safety, but quality. I know my drink isn't going to taste funny or my food taste off. Part of that is stringent and high quality repair and calibration.
There's a reason I go to McDonald's more than, say, burger King, KFC, or wendy's for my junk food fix.
That isn't mcdonald's or taylor's argument though, they are spinning this as safety issue to scare people into believing someone sorting out their horrible engineering is going to lead to food borne illness.
There's a reason I go to McDonald's more than, say, burger King, KFC, or wendy's for my junk food fix.