I take Elton's point but my analogy was intended to be more in relation to
a departure from the established practice. But then could one could argue
that the analogy related to the 'rightness' or otherwise of the contention
that there is no right or wrong in this case. I have a feeling that that
last comment is tempting fate; let us hope that she has not noticed.
Apart from that, ' the 'Cycloid Fathom Group' sounds interesting ; to
paraphrase Ross, 'Who they ?'
Terry King