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Re:Structure and Interpretation of Computer Programs – JavaS... by shakna on Wednesday December 18, 2019 @11:48AM (#21826708)
... Yes. Of course they can.

Lisp is usually an academic language, which means research into type systems and type safety frequently takes place in it.

ACL2 is a theorum prover written in Common Lisp [0]. And not just a random project either, but something AMD, ARM, IBM, etc. have used.

[0] https://en.wikipedia.org/wiki/ACL2

Re:Structure and Interpretation of Computer Programs – JavaS... by jcora on Friday December 20, 2019 @05:54AM (#21843181)
This is not a practical language with dependent types tho lol