What the fuck is an extropian?
"Extropian" was the 90s era term that capital-R "Rationalists" called themselves back then. The implication was a giant "nuh uh" to mortal limits and human limitations, including entropy itself as the name suggests.
You got decades of lore about these reptiles eh
At a casual outer circle level, I used to be one of them. I used to attend the so-called "futurology" conferences in my local area. I watched them get fully bought out by billionaires and I saw the military-industrial complex set up shop there. 
moments there.