Citation: Mab. Deakin, Using model systems to demonstrate instances of mathematical inequalities,a Comment on R. J. Tykodi [Am. J-Phys. 64 (5), 644-648 (1996)] and Lucio R. Berrone and Carlos D. Galles [Am. J-Phys. 66 (1), 87-88 (1998)], AM J PHYS, 67(7), 1999, pp. 641-641