On 28/02/2015 14:54, MichaelJF wrote:
> May be Le Forgeron had this in his mind:>> http://en.wikipedia.org/wiki/Optical_illusion>
Yes, of course. I had forgotten about that.
> But this would only explain one part of the black-blue vs. White-Gold riddle.>
More of an explanation here, Michael.
http://www.bbc.co.uk/news/uk-scotland-highlands-islands-31656935
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Regards
Stephen
