Summer 2020: "Hey - masks and distancing work to help control airborne spread of this disease. And we don't know if it lives on surfaces so let's clean those a bunch too. And take temperatures to weed out anyone with a fever.
Late 2020: "So masks and distancing still work great, but we've learned airborne is really the only way to transmit this virus. No need to be so strict with cleaning. Also, taking temperatures is pretty counter productive since temperatures can vary so much and many people that have the virus don't have a temperature
Your solution: "Close everything down again"
We did identify what worked. We just took away what wasn't necessary.