Ha Ha you two. How about this: the unknowable (for us) might be found out by , say, mathematics which can perhaps know all But no one conceivably understands the extreme mathematics (that the AI stated) except those that say how beautiful they are (whilst still not understanding).I would agree on the basis that what we do not know, possibly only temporally, is, at least for the moment, unknowable.
Playing with complex equations and following the rules is one thing but getting the results to achieve intuitional thinking is quite another - the extremes of string theory for example.
Also Topology is a killer.
So the unknowable by us is known by mathematics (and maybe AI)