That title is total clickbait 

I "discovered" it because I threw it together.
I don't know Forth, but it always seemed like an interesting programming language to me. When I found 
68000 assembly language code for an interpreter online, I decided to hook it up to my 
lisa_io library. Ray, you once encouraged me to make an OS for the Lisa, and technically I have done it 

. It can only use 32KiB of RAM, it can only do reads and writes to the hard disk, it can't use the mouse or the floppies or graphics or the clock, but if 
Volume 1, Issue 1 of Forth Dimensions says that the interpreter "is its own operating system", then who am I to argue?
https://github.com/stepleton/lisa-fig68kWorks fine in Ray's development-branch LisaEm. Don't divide by zero or it crashes...