I know it was a long essay and I skimmed most of it myself. But the author definitely mentions this and even has a picture from the 1895 book you linked to.
My own anecdotal evidence is myself and many of my peers smoked plenty well under 18 and many of us became successful or reasonably so. the whole moral panic over cannabis use has been overwrought and fraught with bad science. now, would I want my child to use before they were 25? absolutely not. is it a catastrophe if they did? also no.
because the mind is developing and the science isnt conclusive as to the factors that affect that. the original claim, if im understanding this thread, is that all marijuana use before 25 will make you functionally useless. I am refuting that claim with the anecdotal evidence of myself and many of my peers that that is absolutely not the case - hope that clarified things.
Well, the vibe I'm getting from these comments is people reacting emotionally, and assuming the study concludes that smoking cannabis causes memory problems. But the article itself says:
> The study has limitations. It was an uncontrolled, cross-sectional study, so the association seen between cannabis and brain function can’t be considered causal.
So even this study doesn't say it's causal, and admits to many other limitations. I agree with your point about evidence and science though, but this is hardly a smoking gun that cannabis makes you dumber.
Homeschooling is another way to protect your kids from social media. If they aren't subjected to forced hang outs with kids who are all on social media, it becomes much easier to control their access to it (or rather its access to them).
And for a slightly different take on mechanically made music here's Quentin and His Bird Box Orchestra featuring His 18th Century Hand Teacher: https://youtube.com/watch?v=gbX6lm-DZ4g