"scientist in the school" dis-info?

Hey guys, I was just thinking about back in elementary school when they had those "scientist in the school." It seems that they fed us a bunch of BS or, they put a janitor in a white suit. I remember things like..

"air is the cause of gravity"
"Lightning comes from the ground"(apparently this does really happens but, she stated it ONLY comes from the ground.

So, I just wondering what you guys think about that or, things you have experienced like this.

On that note, I wont even go into "police officer in the school" because I doubt they were every thought the crap thay tell us, probably just "wing it."

-Bumross.

I didn't really mean "dis-info" like government stuff, it just kinda sounded right. I more meant like, them trying to make us stupid or something, it seems dumb but, I don't understand why a "scientist" would be so ignorant.