  There is no good reason to think that BSM-CP-odd phases(s) will necessarily
cause large deviations in B-physics from predictions of the SM. Therefore,
residual theory error in extraction of the unitarity triangle can undermine
experimental efforts to search for BSM phase(s). We stress that final states
containing D0 or D0-bar in decays of charged and neutral B's can yield all the
angles of the unitarity triangle with negligble theory error (i.e. O(0.1%)).
