That's not proof of any kind. Schizophrenia doesn't have to have anything to do with being high.
Unless I'm mistaken, the two posts above are complete & total bullshit.
THC has not shown to be damaging in any credible study that I've yet to read. I want some goddamn evidence. If anything, it's shown more positive than anything.
Here, peruse this forum before you speak:
Science