Final answer:
Mercier and Sperber explain cognitive bias as a pattern of 'quick' thinking based on heuristics or rules of thumb. They emphasize the evolutionary reasons for cognitive bias and how behaviors that seem bizarre from a logical standpoint can actually make sense in terms of evolution.
Step-by-step explanation:
Mercier and Sperber explain cognitive bias as a pattern of 'quick' thinking based on heuristics or rules of thumb, which can result in less-than-optimal or incorrect decisions. They emphasize the evolutionary reasons for cognitive bias, suggesting that these biases have developed as a result of the brain's natural and efficient operation. From an evolutionary perspective, behaviors that may seem bizarre from a strictly logical standpoint can make sense because they have evolved as adaptations that increase an individual's chances of survival and reproduction.