In this article I reply to criticism of my published work by N. Psarros (Journal for the General Philosophy of Science 28: 297–305,1997). I show that I had already answered the first criticism in my published work and not overlooked his supposed refutation. However I offer a plausible argument which he could have used to strengthen his claim. Psarros cites my work on Hopkins in his opening paragraph, but then makes no further reference to it in the text. I indicated (...) to Psarros verbally at Ilkley 1994 (and reiterate the message here) that Hopkins' work on Vitamins is the exemplar of a Popperian historical episode and must require addressing by the opponents of critical rationalism. (shrink)