Many years ago, when I was a highschool kid, there was a fellow in my home city who thought he had squared the circle, and proven that Pi = 3.2. He published a series of full-page ads in the local newspaper, which gave excerpts of his proof, but also devoted a lot of page space to extolling the virtues and benefits of this discovery, and to praising the Lord.
Being a smartass kid, I figured I would reach out to the guy and show him the errors of his ways. Phoned him, arranged an afternoon visit, and was warmly welcomed by a retired man who was pleased that someone took an interest. (Side note -- yes, this was a time when parents let their 15-year-old kid go out on his own to visit a stranger...)
I left in the evening with a copy of his self-published book with the full "proofs", and with a lot of frustration. The guy's way of reasoning was so different from what I had learned in school: He kept starting from unproven claims and arguing round in circles until he reached the conclusion that the claim was true, etc. -- I could not get a foot in the door. The book was the same.
I concluded that arguing with this type of evangelist is
not a fun way to test your (math) skills, but that it is pointless. I have typically given wide berth to these types of "discoveries" from thereon. I still have the book, and have occasionally looked at it to remind me of that learning...
Now wait -- why was I telling that story here?