Somewhat! The authors talk about the longevity of CL, which is less a fact about lisp than an accident of history. Janet, for instance, is obviously quite new.

Somewhat! The authors talk about the longevity of CL, which is less a fact about lisp than an accident of history. Janet, for instance, is obviously quite new. Elisp is quite old, but I wouldn't use it for non-emacs development. Schemes are old, and while there are lots of one-off schemes which seem to be educational projects for their developers there are also lots of very old and battle-tested dialects (Chicken scheme comes to mind, Racket is old-ish and backed by its use in education). The interactivity is fairly universal. Scheme in its smallest nuts and bolts doesn't care that much about interactivity, giving eval but no other real support for a REPL, but due to cultural effects pretty much every specific scheme is very interactive. I've seen complaints about every specific lisp I've ever used that it's not a real lisp because it doesn't support [extremely specific interactive option user integrated into their workflow in '93 and can't live without], but everything the authors talked about is likely to be present in just about every lisp.