Jonny Griffiths teaches mathematics at Paston Sixth Form College in Norfolk, where he has been for the last twenty one years. Before Paston, he taught A Level Mathematics at St Dominic's Sixth Form College in Harrow-on-the-Hill, and at the Islington Sixth Form Centre. He also worked for eighteen months at St Philip Howard 11-16 comprehensive school in Tower Hamlets. He has studied mathematics and education at Cambridge University, with the Open University, and at the University of East Anglia. He is (in)famous for writing an article in the TES about 'Michael', an anxious student, that created a furore on the Internet. A defence of the article can be found at http://stephentall.org/tag/jonny-griffiths/ His other published work on mathematics and mathematics education can be found at http://www.s253053503.websitehome.co.uk/articles/mydirr/index.html.