Why search for an imaginary loophole when all you have to do is stop getting high or drunk.
You see, the difference between alcohol is a person (depending on that person) can enjoy a single drink over dinner without becoming a drunk. When you look at MJ, what would be the point (supposing it’s even possible) of inhaling less than the amount to get high? There is none. It doesn’t smell good, it doesn’t taste good, and the only purpose is to become high, period. No one smokes just enough NOT to get high as it serves no purpose and is a colossal waste of money. No one pulls their shades, locks the door, rolls a joint, lights said joint and takes one puff.
Again, I still say even one puff provides almost instant effects. I have had more than an adequate number of people confirm this. Looking for ways around something wrong in order to feel no guilt only does you harm.