Thanks, I did address that when I said you can solve it if you know all actors in a n-n system, but I should have been clearer by pointing out the solution, whi

Thanks, I did address that when I said you can solve it if you know all actors in a n-n system, but I should have been clearer by pointing out the solution, which is (as you already said) every known actor acknowledging it. In an unbounded n-n system I still don't see a solution.