Did you know that letting someone sleep after getting a concussion can kill them?
Of course not, it was thought at one time to be true though. We make judgments based on our experiences. When we lack direct experience then we use what data we are provided. Too many short sighted and blatantly incorrect reports have tainted public knowledge.
This is the main issue. All we can do is attempt to undo the damage.
Do any of you remember when Mickey from the Life cereal commercial died from eating pop rocks and drinking soda?... it is the exact same issue. It takes constant proof otherwise to convince people what is truth and what is fiction.
oh, and just in case you believe the above:
Surprising concussion myths and facts
and
http://urbanlegends.about.com/od/fooddrink/a/little_mikey.htm
Here is some of the damage that can be done!!!
Unfortunately, the boy who played Little Mikey at the age of three never achieved much fame outside of those commercials and, by the late '70s, had seemingly vanished from sight. This gave the rumor legs, and sales began to suffer. Despite an effort to dispel the falsehood by taking out full-page ads in dozens of newspapers across the country and mailing explanatory letters to 50,000 school principals, misinformation prevailed and General Foods was forced to pull Pop Rocks from the market in 1980. The rumor died with the candy. (Pop Rocks enjoyed a resurgence five years later when the patent changed hands, and have been off and on the market since as different companies bought and sold the rights.)