You are right, but I think we can't say definitively one way or another until we have more data. Personally, I think it is a bad idea to operate machinery when

You are right, but I think we can't say definitively one way or another until we have more data. Personally, I think it is a bad idea to operate machinery when with any potentially mind altering (drowsy, intoxicating, etc.) substances on-board. That doesn't stop people from driving on heavy doses of Nyquil or prescription drugs, believe me. People that have no regard for the law, themselves, and others will continue to do what they do irrespective of what is legal or not. That is just an aspect of free will and the human condition.