I used to say here that "I am not a very good mathematician" but with the aim of being a bit more positive about myself I shall say that "I am a mathematician who occasionally manages to teach" and I do have an MPhil in Pure Mathematics. I have spent much time over the years, on and off, trying to formalise a way to "measure" Vitali and related non-measurable sets with "infinitesimals" however they might be defined. I also have an interest in paraconsistent and other alternative logics, though some might say that is more philosophy. Anyway, please indulge me. Thanks.