I liked apognophos" remarks on post 2009. There are many good questions that help to enlighten less educted-in-the-speciality members.
Often the book recommended to not really adress the question at hand but cramm in more detail that appear to be the clinching argument, but just give explanations, learned Jargon, novel names, classifications based on ancient languages.
thank you for the flounder pictures. used to try to catch little ones when I was lttle and the water un-polluted. The stereo vision from those elevated eyes helped to reproduced a pretty good pattern of the checkerboard that could be seen from that vantage point, and I am sure no 'thinking' was involved.
The eye-closing was a good analogy.
Cuttle fish are another level of colour use, fooling protecting males, getting a hit on the female, that is willing, because having ALSO offspring from a smaller but SMARTER, and more conniving male would benefit part of her offspring in the next round of selection of the fittest.
The big question is at what point did life aquire tis now automatic upgrading, we call the evolutionary PROCESS. cofty waiting for you one-liner.