Some "truths" are simply driven by perception. The other problem is having new information, as was once said in the movie "Men in Black"

"Fifteen hundred years ago everybody knew the Earth was the center of the universe. Five hundred years ago, everybody knew the Earth was flat, and fifteen minutes ago, you knew that humans were alone on this planet. Imagine what you'll know tomorrow. "

There is no one authority when it comes to the truth, no easy answers, so I advise anyone, to research source material these places site, do the research, come to your own conclusions based on the preponderance of the evidence you examine.