 A related question is whether  \((\ME_1)\)  clashes with the widely endorsed principle that ought implies can. As it stands, \((\ME_1)\) can be read as implying that \(S\) has an obligation to apply “green” to all green objects, an obligation that cannot possibly be fulfilled (Hattiangadi 2007: 180). One response to this is to endorse the wide scope reading,  \((\ME_1 ''')\),  since it allows the subject to discharge her obligation by not meaning green by “green”—something that does seem to be in her power. Another response consists in removing the biconditional in \((\ME_1)\), replacing it with a weaker principle (Whiting 2007: 137):