Steven: Apologies for the following divergence .. I'm hooked (again) ..
Well .. I've looked around for an answer to my questions on this. I assure all, that my question was a genuine one … and it was meant to have been posed with the utmost respect to Bert, also .. apologies if it didn't come across that way there, Bert.
Whilst I understand that the fovea is the most sensitive part of the retina, and is responsible for sharp central vision, it is not necessarily obvious to me, that an object of the same shape should be "pleasing", just because of this.
I feel there's more to this than just the optical properties of the eye. So …
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The Golden rectangle has been known since antiquity as one having a pleasing shape, and is frequently found in art and architecture as a rectangular shape that seems 'right' to the eye. It is mentioned in Euclid's Elements and was known to artists and philosophers such as Leonardo da Vinci.
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There are other numerous quotes around supporting this view, also.
Whilst I'd probably be crazy to challenge 'the masters' on this, it is clear that there's a LOT of subjectivity and brain processing involved here. To me, there are lots of 'pleasing' shapes, and a rectangle is not exactly high my own personal list.
Then I read up on "Gestalt Psychology" and the 'Gestalt effect' ...
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The Gestalt effect is the form-generating capability of our senses, particularly with respect to the visual recognition of figures and whole forms instead of just a collection of simple lines and curves.
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… well, this just isn't a straight-forward issue. Lots to learn here. Maybe worthwhile keeping this in mind whilst watching the doco tonight, also.
Apologies to all for diverting the thread .. (just for this post .. unless anyone is interested in taking it further).
Cheers & Rgds