[MrLeRoy]

Now, if your point is that beer is just as harmful, then haven't I made my case that MJ is harmful?

No, "just as harmful" can mean they measure both harms as zero. Please answer this yes-or-no question: If the kid had come to school with a 6-pack, would you say that was evidence that alcohol harms its users' children?

[robertpaulsen]

Why do you insist on comparing marijuana to alcohol? Let's compare it to another illegal Schedule I drug, heroin.

"If the kid had come to school with heroin and needles, would you say that was evidence that heroin harms its users' children?"

Your one word answer, "Yes".