#7 seems problematic to me. How can you be sure if a person doesn’t dream or simply doesn’t remember their dreams upon waking?
They do studies on people to determine sleep cycles and amount of REM sleep, etc. fascinating stuff.
Recently one of my students told me about the brain flushing article. Now I’m curious and I’m going to have to go find it and see what it says.
Some interesting tidbits on this sleep list though. In canada parasomnia has gotten 1 offender off on a murder charge. This defense has been used by others both in the US and in Canada but juries haven’t bought it.