Does this means that the generic linear equation bx + c = 0 is not an instance of the generic quadratic equation Ax2 + Bx + C = 0 ?
Of course not! The correspondence requires setting A = 0; B = b and C = c. If you erroneously set A=1, then the blame for the resulting mess is on you! In other words, to properly model the generic linear equation as an instance of the generic quadratic equation you have to make sure that you use the correct instance of the latter. Likewise, to properly formulate Info-Gap’s decision-making model as a Maximin model, you have to make sure that you use the correct instance (eg. the instance specified by the Maximin Theorem) of the latter. As explained in FAQ-20, Ben-Haim’s error is that instead of using the Maximin model stipulated by the Maximin Theorem, he uses (eg. Davidovitch and Ben-Haim 2008) an inappropriate Maximin formulation.
