amniscience (amnis + scientia) is, in practice, externally indistinguishable from omniscience (omnis + scientia), distinguishable only when suspended in a sort of exploded view, not quite a view from nowhere but maybe a view from elsewhen
it's implementable, too: it's a particular interface construction, just a clean seam with the unknown, a seam that says what it is on this side, and - on the other side - is as you find it when you go look.
see also: foam, three-body