 where two acts \(f\) and \(g\) are comonotonic iff, there are no two states \(s_1\) and \(s_2\), such that \(f(s_1)\succ f(s_2)\) but \(g(s_2)\succ g(s_1)\), or again iff \(f\) and \(g\) yield orderings of states by desirability of associated consequence that are jointly consistent (Chew &amp; Wakker 1996). Clearly, the Ellsberg preferences are perfectly compatible with this weakening of the Sure-Thing principle, since the acts involved are not comonotonic. For instance, \(f_1(r)\succ f_1(b)\) but \(f_2(b)\succ  f_2(r)\).[12] 