"irreversible" ... you know "scientist" is not "scientist" ...
there was single "scientists" with huuuuuge press attention, that told people: weed makes you schizophrenic, computergames turn you into mass murdering teenage-gunman, and porn makes you either retard, blind or rapist ...

99% of other "scientists" said this is BULLSHIT but no one bat an eye!

laws were made after this bullshit ...
because they pick what they listen to