It is indeed very brief. Something I've been wondering about lately is how much language developers get to code in their actual language. Perhaps if things get

It is indeed very brief. Something I've been wondering about lately is how much language developers get to code in their actual language. Perhaps if things get really really far along, the language interpreter/compiler/runtime/whatever becomes self-hosting. But I suspect many languages never actually get that far. I was just thinking about the fact that maybe most language developers today still code in C (I have no idea if this is actually true). Perhaps in the future they will code in Rust or Go. He does briefly speak to part of this point: > I don't think I'd change anything in them except to emphasise more that a programming language is a Human-Computer-Interface and the language designer should design for the users of the language, not just for himself or herself. -- I personally have never used Rexx. But I remember many years ago I made an attempt to sign up for an OS/2 Warp beta and being shocked when I actually got picked. I recall installing it and the OS contained what was the first instance I had seen of some sort of voice control for computers. Even at the time my IBM PS/2 (a 386sx running at 20MHz) was at the low end of the requirements for OS/2 Warp and the system didn't perform very well at all. But I have a memory of speaking something like "Computer: Go to sleep!" and my brother laughing at me and repeating it from time-to-time after that, long after I'd uninstalled OS/2 and went back to Windows 3.11 or DOS or whatever I was running in those days.