Pamela King and Angela Barrs (色盒直播S, October 14) represent me as a stone-throwing, glass-house dweller because I confused an idiomatic error with a grammatical one in my article (色盒直播S, September 30). I did not; whoever edited my article did. The example I gave of a grammatical error from my students' written work was "There is no criteria".
ROBERT JEFFCOATE
Chalfont Road
Liverpool