Thanks to my good friend Paul Sas for the wonderful surprise present. I’m not sure he is commenting on my cleanliness or oral hygiene? More likely he is sharing an affordable dollar store example of “Engagement” best practices. In this case the trigger is the LED light setting the user on a course to success. The action is the brushing and the reward well is a shiny blinking light. (pavlovian response?). Finally the investment is clean hands and shiny teeth.