Déjà vu?
There is a strain called "headband. I’ve no personal experience with it.
Also piss poorly cured weed (usually notable for being more brown than green) will give you a serious headache–to the point we call it “headache weed.” Similar issue with strains that need a longer flowering time that are harvested prematurely, those will put the hurt on ya.
I wish I knew what breed it was but I’ll prolly never know because we don’t go through much and there’s always something different at the candy store. But I’ve only ever hallucinated once on the stuff, and it was hysterical (I mean, it still gives me the giggs). I remember playing Call of Duty and every time I’d shoot, I’d see this rainbow zigzaggy box pop up around the muzzle of whatever gun I was using. It was subtle but it amused the heck out of me. The cat seemed pleased about it as well, but he was trying to be cool about it.
But yeah, video games today are WAY better than they were in the 80s.
What does that mean?
I smoked a lot of pot in high school and early college. Stopped because it made me paranoid and I hated it. Smoked or ate edibles perhaps once every two years since then until it recently became legal in CA. I have tried edibles since and they sure do get you high, at first over-high, but I’ve found them enjoyable. I have settled in at about 1/4 of the recommended dose of the particular gummy I bought–pleasant but not overwhelming. No paranoia.
As for hallucinations–I have experienced those from smoking marijuana, and my experience was horrible–menacing creatures flying around the room. I dragged myself from bed to ask my friends if maybe this was PCP-laced weed. The three guys I had smoked with said no, you’re just over-stoned. I was indeed, and I think this goes to show that like alcohol or any other drug, strength of experience is not based solely on the chemical composition of one dose–as I had smoked in equal or lesser amounts than my friends.
You said “Medical marijuana only got legalized in the US in 96”. That statement is not true in this timeline. 
I thought California was the first in '96. From wiki:
When did it happen in your timeline?
Eta: maybe you thought I meant federally? No, I was just trying to frame when the “business […] gained legitimacy, people with degrees in botany and horticulture […] used better science to grow stronger stuff” happened like hajario was talking about.
Yeah, CK, you used “US” there. It’s never been federally legal.
Yea, I’m being a pedant, but I’m also celebrating becoming legal for MMJ in Pennsylvania!!!
I had a friend in the early 1970’s who wouldn’t use pot because, she said, it made her trip (as if on LSD), and she didn’t like tripping.
Individual reactions vary wildly.
On the strength issue: I also knew people at that time who would routinely keep smoking until they couldn’t pass the joint any longer. Or stand up, for that matter. Stronger dope? that didn’t take as long. Weaker dope? just smoke more of it. So I’ve always been unconvinced by the ‘but it’s stronger now’ argument against legalization (which is how I’ve frequently seen that claim used.) The information earlier in this thread about increased THC also affecting other components, however, is interesting.
Well, the FBI is forbidden from interfering with medical marijuana so it’s presently de facto legal.
And that’s wonderful. But I worry about people like my nephew, a professor of Mathematics in Colorado, who last xmas was stopped by TSA bringing his state-legal cannabis aboard a flight in his carry-on. He argued with the TSA agent that he wasn’t doing anything wrong. He was allowed to throw it in the garbage 
and continue with his travels, but he argued about that!
OMG, they treated him like he was trying to bring a bottle of water through security!
Eta: sorry to make light of it, I’m sure that sucked. But as far as scare stories go, that’s not super scary.