Does it follow that if I make the statement "X must be consistent with Y" that "Y must be consistent with X"?
I'm hoping to hear this answered from a linguistics perspective, specifically related to information packaging and the use of the modal. I fear that this community may say "this isn't a good English question" just as much as the mathematics community might say "this isn't a good math question."
I've omitted the context here intentionally because the context itself is a bigger can of worms. What we can know from the structure itself: are these equivalent forms, or is this a false equality?