  The clearest, most temperate description of the issues at hand is given by young cosmologist William McCrea, then professor of mathematics at Queen’s, Belfast, and editor of the R.A.S.’s Observatory. Not to be outdone by Jeffreys, McCrea begins with an ad hominem of his own: “Dr. H. Dingle’s objection to ‘modern Aristotelianism’ seems to be itself what he would call Aristotelian rather than Galilean.” In other words, Dingle raises a non-empirical objection about Milne et al.’s non-empiricism!  But McCrea soon gets to the heart of the matter, the role of hypothetico-deductivism in mathematical physics: