You shouldn’t believe everything you hear because not all of it may be based on fact. Chances are the person saying it may just be acting on blind faith without having done any research. It’s definitely easy to spread misinformation but much harder to disprove wacky theories.
The folks in this list all fell victim to such ‘facts,’ spread by people who were absolutely convinced by what they were saying. Hopefully, some of these examples might serve as a reality check in case you still believe any of them.
More info: Reddit
