There should be more studies on micro-dosing as well. Many of the modern drugs that one can buy from the pharmacy would have serious bad effects if you take 10-20 pills at the same time. Yet, you take take a small dose from a package, and you are OK. i.e. micro-dosing (1/20 => 1/10 of a "regular dose") could give one all the benefits of Psilocybin without any detrimental effects - at all.

p.s. most probably you won't be "converted" into a hippie (as some people are worried about it) if you are micro-dosing.