Lightening this up, when I was younger and could see there were many optical
illusion pictures around. One was the impossible waterfall, as I'm sure you
have all seen where they all join up and all appear to go downward.
There was another of a one sided ladder that curved and had a twist, so
that the little cartoon men could not only climb forever but never find the
other side.
The old obvious loop. One sided bit of paper etc.
Brain breaking stuff.
Brian

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The Sofa of Brian Gaff...

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"T i m" wrote in message
...
On Fri, 20 Nov 2020 14:35:52 +0000, "Jim GM4DHJ ..."
wrote:

snip

totly

Ok, how we have that sorted, what practical advice can you offer with
all your years of experience?

And see if you can put as much effort into your reply as you did when
complaining that you weren't being taken seriously (assuming you
actually have any experience of such ladders of course)? ;-)

Cheers, T i m