https://www.mlive.com/resizer/G7WZuDwdu5D2eCujzIi_RYGWYkc=/7...
https://www.mlive.com/resizer/G7WZuDwdu5D2eCujzIi_RYGWYkc=/7...
When I do have it today I make sure to seek out the weakest stuff I can. It's annoying that you might just have one option below 15%. Of course edibles are a far superior option in legal states. Easy dosage and no damage to your lungs. I'd also suspect that the milder (but longer) highs are easier on the brain.
It's basically the cigarette filter thing; people know where they want to get, and they'll keep going until they get there, no matter how weak you make it. Which is what made filtered cigarettes worse for your lungs than unfiltered ones.
The calculus would be different if you were talking about edibles, because they actually sneak up on and can surprise you.