Hire someone who's perfect, and code will never have bugs.

That's not what I wrote (and I suspect you know that).

You said that Perl doesn't scale beyond small programs. I said that hiring a good programmer with discipline and skill works.

There's no typechecking...

Perl has container types.

...no array bounds checking...

Perl has dynamically-sized arrays.

That principle can't scale: independent of the language you implement it in.

Dozens of other people on this site (with names and actual histories of doing such a thing) tell different stories. That's why I say that you should hire people who know what they're doing.

Now I wouldn't write an embedded control system for custom hardware in much of anything but Ada, but generalizing from that point to "Perl can't scale" is a stupid overgeneralization.