In response to Graham Christian wrote:
Ah, one of my old students. Well found.
I haven't read the thread you took Demetrio and Graham's posts from but my first thought when I read his comment in the context you have presented it here and an option you appear not to have considered was:-
5. That is an example of Graham's humour (humor!).
I took the "Ah, one of my old students. Well found." as literally as it was written.
There was not the usual Graham's "ha, ha", no funny smiley nor any kind of hint about he trying to be humorous.
As far as I'm concerned, he lied to me expecting his claims would remain unchecked.