Yeah, the main coherent point I take out of this is that it makes sense to provide capabilities rather than to check them, i.e. if you have access to a certain

Yeah, the main coherent point I take out of this is that it makes sense to provide capabilities rather than to check them, i.e. if you have access to a certain API then you're by construction allowed to use it. It seems this is something the author has been working on. This is then somehow shoehorned into "Parse / Don't typecheck" but it doesn't make much sense honestly.