On 17 Oct 2012, at 13:34, Martin Holmes <mholmes at uvic.ca> wrote: > "Feasibly valid" doesn't apply to well-formed fragments, though, does it? yes, why not? -- Sebastian Rahtz Director (Research Support) of Academic IT Services University of Oxford IT Services 13 Banbury Road, Oxford OX2 6NN. Phone +44 1865 283431