 Determinable-based MI: For a SOA to be metaphysically indeterminate in a given respect \(R\) at a time \(t\) is for the SOA to constitutively involve an object (entity) \(O\) such that (i) \(O\) has a determinable property \(P\) at \(t\), and (ii) for some level \(L\) of determination of \(P\), \(O\) does not have a unique level-\(L\) determinate of \(P\) at \(t\).