It should be noted that it is specific, as far as we know currently, to crustaceans. Lemurs are not evolving into crablike things. Carcinisation is when a crustacean that did not appear as a "crab" evolves into something that has the appearance of a "crab".
Maybe not lemurs but it seems as if people are getting crabbier....
Ratiocination : Reasoning, conscious deliberate inference; the activity or process of reasoning
"Poe stirred Lincoln with his tales of elaborate ratiocination."
"We are the people our parents warned us about!" - J.Buffett