I have recently heard of this theory that the women who prcreated with the angels (the ones who created the nephilim) were cast into the sea and had their legs closed so they could no longer reproduce and we call them mermaids/sirens.
Also, the Leviathan is real and alive and is the reason we are no longer exploring the ocean.
I was always fond of the one that a guy invented a car that could run on water, but was paid off by the oil industry to keep it secret.
The more you think about it, the less sense it makes.
There was a guy in the 1970s during the oil embargo that figured out you can run a V8 on literal gas fumes and get 100mpg. He drove about 200 miles to prove it. Car companies studied the car. It was true, but the car had no power; like 0 to 60 in a minute or something. It was bad for the engine, it needed a system that heated the gas and pressurized it, over complicated and basically a bomb under the car. The conspiracy is the car companies just agreed not to make it in a backroom deal with OPEC.