It's only an open question insofar as what are considered "minds" and "arguments" remain shrouded in mystery.
I'm rather certain that for a non-negligible fraction of all minds, the entire concept of "arguments" is nonsensical. There is, after all, no possible combination of inputs (or "arguments"), that will make the function "SomeMind(): Print 3" output that it is immoral to tube-feed chicken.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.