Keith - not nasty... just over robust sarcasm, which I accept now in the cold light of day as maybe going a little too far... apologies..

But it was born out of exasperation and boredom with your constantly repetitive style of [non] debate...

In my life I honestly have encountered a few individuals with similar obsessive mindsets of denial as yours,
nearly all when involved in voluntary work in my late teens & 20s.

That bloke I mentioned was real and truly sad.
He was very intelligent and educated, well presented in his business suit;
but since his personal misfortunes, something had snapped in his mind.
Sitting there all day in the drop in centre, forlornly clutching his briefcase,
awaiting the next unsuspecting new listener to sit next to him.
Repeating the exact same word for word story over and over.....
and laying out the contents of his briefcase,
documents that 'proved' he was right and not to be blamed.......