It is because of the RULE OF THREE.
The best minds in the world, throughout written history, have made intense studies of how the MIND works. With the advent of RADIO and TV (and now the internet), Large corporations put tons of money into the same RESEARCH. They hired the BEST OF THE BEST to find out how to manipulate people.
They learned quite a few 'tricks'.
One of them is this... If something is heard or viewed by a person THREE TIMES, the SUBCONSCIOUS MIND stores it as fact. The 'media' uses this trick constantly. It is a favorite technique of the Democratic Party.
It was also a favorite of these guys.
Fact, 99.9% of what I hear is stored as fake.