"It follows that the higher the available THC potency, the higher the risk of deleterious effects."  

No, it doesn't.  Show me a peer-reviewed, reproducible study that shows that, and I'll look at it.  

And stop with your strawman arguments.  No one is suggesting that adolescents should be allowed to use marijuana, despite the fact that they do, a lot.

Can you tell me what "uncharted" risks we are talking about?  The Federal Government is now over 40 years into their "temporary" placement of cannabis as a schedule 1 drug and people like you are STILL saying "let's not rush into things."  

Do you think cannabis should be Schedule 1?  Do you think adults should be permitted to use a safe, non-addictive drug in the privacy of their own home?  What about a toxic, addictive, drug that causes birth defects and thousands of deaths a year like alcohol?