I really made an effort to get into https://factorcode.org/ https://factorcode.org/ about a decade ago. It's an incredibly impressive project, but I found that

I really made an effort to get into https://factorcode.org/ https://factorcode.org/ about a decade ago. It's an incredibly impressive project, but I found that the cognitive overhead of manipulating the stack stubbornly failed to go away over time. I say this as someone who is reasonably comfortable writing moderately complex Haskell code, so it's not that I'm unable to adjust to unusual programming paradigms. I think naming local variables just turns out to be an incredibly good idea. That said, I do appreciate the conceptual simplicity and ease of implementation of concatenative languages. They certainly have their place. In case there are any Factor evangelists out there, let me add in fairness that the language makes it easy to use named variables if you want to.