I just hate how the interviewer is insinuating ‘stuff’ about him. Is he on the spectrum? Who the fuck cares. Enjoy the interview, questions are not what I would ask Wall though!
I’m admittedly too ‘young’ for Perl, but I have written some programs in it: https://github.com/Chubek#perl — I especially like AllocPPx.
Did you look into Raku at all? I’m fascinated with it but haven’t used it for anything serious.
I read through their engines. I think there’s 2? Their newest VM is really great. I learned a lot about interoperability from it. They have a whole protocol, using libffi. It’s called ParrotVM. Give it a look.