The last part you quote is really important to understand the conclusion. Expectancy and mood can really alter psychedelic experiences. Can't be sure for micro

The last part you quote is really important to understand the conclusion. Expectancy and mood can really alter psychedelic experiences. Can't be sure for microdosing, though. Now, how could an experiment up the methodological rigor? Maybe signing a contract where one does accept to be given microdoses of LSD randomly in a period of 5 years, and secretly spilling it on his water?