@unknownuser said:
I think that image can help those with 'one direction only' find a way to switch. Why? Take a closer look at each individual frame. I can easily see all those intermediate frames between those when the position of the lady IS certain, as a lady facing me or showing her back !
Our imagination decides if we see the front or the back because the silhouette doesn't define it exactly.
Tomasz
We, in the western world, learn the process of reading at an early age. That process involves recognizing individual patterns. Furthermore each of us spends a lot of time associating those patterns of letters with words, that pattern recognition process just happens to start at the left and ends at the right. But not in all languages follow reading patterns from left to right.
(Unfortunately after many years of education sadly today, many have not mastered that process)
Even the individual pictures you placed in your picture are assumed to be read left to right just as we read text, followed by line after line.
Many years ago, before computers. The Type that was produced by newspapers required a person that was a Typesetter by profession. These Typesetters had to layout each newspaper page by installing individual blocks of type, each block contained one letter, those letters were mirror images of each letter of type, and had to be placed as a mirror image of the page so that the offset press would then print the page. A Typesetter had to be able to pick individual blocks of letters which were mirrored as well as be able to place those blocks into words that he had to be able to spell and read backwards, as he or she was laying out a page for printing.
Hence I don't think this has anything to do with imagination, or right versus left brain thinking.