In his path-breaking work on the foundations of visual perception, the MIT neuroscientist David Marr distinguished three levels at which any information-processing task can be understood and emphasized the first of these: Although algorithms and mechanisms are empirically more accessible, it is...

In "Moral Heuristics," Behavioral and Brain Sciences 28(4), 531-573 (2005), Professor Cass Sunstein draws on recent scientific literature on heuristics in judgment and decision-making to argue that heuristics play a pervasive role in moral cognition and often lead to mistaken and even absurd...