He is also developing light-delivering goggles that are supposed to help people reset the circadian rhythms that govern whenthey nod off and wake up, so theyfallasleep faster and stay asleep longer.
They were confident it was the right way to do it, despite an utter absence of evidence. (He later showed patients generally perceive less pain if bandages are removed slowly.) When patients exhausted their daily morphine rations, sometimes nurses would give them placebo injections and they would quickly fallasleep.