Thank you for your replies.

Can I refer you to to the meaning of the Tu Quoque logical fallacy which you both employ in your most  recent posts. A "logical" fallacy is a mistake in reasoning.

'Tu Quoque is a very common fallacy in which one attempts to defend oneself or another from criticism by turning the critique back against the accuser. This is a classic Red Herring since whether the accuser is guilty of the same, or a similar, wrong is irrelevant to the truth of the original charge. However, as a diversionary tactic, Tu Quoque can be very effective, since the accuser is put on the defensive, and frequently feels compelled to defend against the accusation.'