I would call it critically endangered, but would never call it a failure. Forth landed on a comet, and ran most astronomy labs and telescope control systems bac

I would call it critically endangered, but would never call it a failure. Forth landed on a comet, and ran most astronomy labs and telescope control systems back in the day. For a couple decades there was a large amount of productive and unsexy work getting done in Forth, much of it under the radar in control systems for manufacturing, scientific tooling, waldos. It wasn't really until the mid 80s that it started drying up.