After I had completed this article, Dr. Klaus Wachtel of the Institut für Neutestamentliche Textforschung, in Munster, Germany, kindly sent me proofs of his outstanding forthcoming article, to be published in ZPE, “p. 64–67: Fragmente des Matthäusevangeliums aus dem 1. Jahrhundert?” Wachtel provides a very detailed critical appraisal of Thiede’s theory and reaches broadly similar conclusions to those set out above.