(potentially lots of relevance here to security issues, esp perhaps mimicry, limits or parameters, insecurity via looped evaluation of shared technique...) 1-Trick Chameleon: Predators Learn to See Through Camouflage // via digg http://nautil.us/blog/1_trick-chameleon-predators-learn-to-see-through-camou... "...the researchers found that it took their participants longest to spot the [prey] when they were using disruptive coloration rather than the other strategies, and that was especially true when the pattern was of high contrast. However, as the [preys’] contrast levels increased above the level of the background, they became easier to spot. In the middle was an ideal contrast level."