> How do you know this is a wrong belief that will stay wrong?

How do you know it won't?

Just because some beliefs that used to be "wrong" are now considered "right", does not mean all beliefs that used to be "wrong" will in the future be considered "right".

As the quote says, "They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown."