759 karma · joined February 21, 2018
Thank you!
I'm having trouble working out how this differs from Factor, in which left bracket and quote are also not primitive.
and I wish someone cleverer than me would read Nick Harkaway's "Gnomon" and then explain it to me.
I believe this is largely to make sure that professors have plenty of experience of what it's like to be professored AT, at the relevant level. I've actually changed my own mind about whether that's a good argument or not (you can have fun guessing in which direction I've changed my mind), but anyway, having been a professor myself I'm pretty sure that's what they're thinking.
FWIW (I don't think this answers your main complaint, but I do think it's fascinating), factor makes a lot of use of the pair "[" and "]" for control flow, but they're totally stack-based:
https://concatenative.org/wiki/view/Concatenative%20language