“anything that has not been OBSERVED by reliable humans is theory”
No. Jesus tapdancing christ that’s not what a theory is.
Anything that has been observed is a fact.
The theory is what we suggest to explain the facts we have observed.
“black holes are theory”
No. They have been observed.
They were predicted by the theory of gravity.
“so are Unicorns (more people can claim to have seen a unicorn than a black hole)”
No. Unicorns are not theoretical. They are fantasy, unless and until someone produces on.
“Flying saucers”
UFO is a fact. That there are little green men inside them is a theory.
Also, that they are angels, demons, and Nazis ar theories. Just very shaky ones….
“The Yeti”
The evidence for bigfoot and associated primates does not stand up to objective scrutiny, so they are not theoretical.
“Never trust a man whose bread and butter is a theory”
Everything in science is a theory, dolt. Every single scientist is one discovery from having to reevaluate everything.
“its not in his best interest to disprove it”
Actually, if it CAN be disproven, it’s in his interest to find this out as soon as possible.
Like Piltdown Man. Too many people tied their careers to what turned out to be a hoax. Of course, many more did not do this.