I did not mean to imply that it was a perl6-specific hazard, and in fact I lost interest because I can already do these kinds of hacks in languages that are dec

I did not mean to imply that it was a perl6-specific hazard, and in fact I lost interest because I can already do these kinds of hacks in languages that are decades old. The downsides are exactly the same, and the advice (“don’t do that in real code”) is exactly the same. In 2017, “look how dynamic things are” is not a differentiator... that part of language design space is pretty mature by now.