Your point is unfortunately, yet realistically, useless.
Basically, this person believes that...
As much as I am proud of your words, girlzRprettiest, it's extremely difficult and often impossible to unteach stupidity. Galileo almost got himself killed trying. Even today, with Tesla cars running around the solar system and pretty girls taking wonderful videos and still shots of their home circling above this big (little) blue dot, there are still real people believing (and insisting) that the Earth is flat.
...which may or may not result in immediate or later psychological distress...
My Little Lover did suffer later psychological distress because of Society's brainwashing activities. Many regular readers here know of what I mean. It is this exact Society that is extremely difficult to unteach stupidity.
... that all men are created equal..." (Minus 10 points if you don't know where that quote came from.)
Except black people.
Except LGBT (and other letters.)
Many years ago, back when god was a kid,...
this part will probably be very boring for you so you might want to skip it...
... I was taking a (required) psychology course (which I certainly needed only for the official credits) from a professor who was explaining how the moon looks larger when near the horizon due to The Moon illusion, an optical illusion which causes the Moon to appear larger near the horizon than it does higher up in the sky. It has been known since ancient times and recorded by various cultures. Because this professor did not understand any science other than his own, he insisted that it was only due to the Relative Size Hypothesis. I had known about this effect long before I had ever attended his class. I had argued that there was also atmospheric refraction to account for some of it. He became adamant that, no, it was ONLY an optical illusion. I am (was) a sailor. Educated sailors will not shoot a star (take a sextant reading) below 20° above the horizon. If observations of objects near the horizon cannot be avoided, it is possible to equip an optical telescope with control systems to compensate for the shift caused by the refraction. Sailors have calculations and tables (36 listed in Pub 9 of The American Practical Navigator, commonly referred to as the Bowditch) that have those compensations down to very useful accuracies. Atmospheric refraction becomes more severe when temperature gradients are strong, and refraction is not uniform when the atmosphere is heterogeneous, as when turbulence occurs in the air. This causes suboptimal seeing conditions, such as the twinkling of stars and various deformations of the Moon and Sun's apparent shape soon before sunset or after sunrise.
The psychology professor was missing knowledge, knowledge that I had because I was a sailor and USED it often. I could not unteach him about reality. His psychology books told him one thing yet the real world was so much different. He got mad at me, eventually and never spoke to me in class nor after. The stupidity could not be untaught.