Forth-like systems do get used for larger projects - we just call them stack-based virtual machines, and compile to their bytecode rather than writing it by han

Forth-like systems do get used for larger projects - we just call them stack-based virtual machines, and compile to their bytecode rather than writing it by hand (and letting the compiler handle the tricky dataflow issues, eliminate superfluous stack manipulations, etc.). Forth makes sense to me in embedded (or otherwise tightly-constrained) systems, but otherwise, you're spending mental energy on being a human compiler. I agree that the concatenative languages are interesting, but the APL family is probably a better example. (Joy is also cool, but much less practical.)