Recently, I found myself eavesdropping on two elderly fellows debating an age-old question: does size matter? Yes! declared one. Small ones have never satisfied anyone. It needs to be big!You’ve got it all wrong,countered the other. Proper use of a small one can be just as good as having a big one. And what good is a big one if you don’t use it properly?/o:pIn a nearby lecture theatre the Costa-Rican Mermaid was preaching the power of long distance swimming to promote big ones.