If they have to use harmless plants to put someone away they need to do a better job
You should watch a documentary called "Murder Mountain". It's about the dope growing industry of Northern California.
The title is rather sensationalized, but it does take a pretty good look at the pot industry and the people involved in it,
If you can watch that and still say pot is harmless to people and their mental acuity I'd say your powers of observation need work.
I grew up in that country and saw what effect pot had on quite a few teenagers, you'll never convince me that it's a good thing to legalize or make socially acceptable.
