We predicted that inspectors, who generally have a moderate salary and means, would experience empathy toward customers similar to them in income (i.e., those driving standard cars) and envy toward customers who are clearly wealthier than them (i.e., those driving luxury cars). In turn, we expected these emotions to lead to illicit helping and hurting behavior, respectively.
And, indeed, we found that for a significant number of inspectors, fraud levels were much higher in support of customers with more affordable vehicles.
The name LISP derives from "LISt Processor". Linked lists are one of Lisp's major data structures, and Lisp source code is made of lists. Thus, Lisp programs can manipulate source code as a data structure, giving rise to the macro systems that allow programmers to create new syntax or new domain-specific languages embedded in Lisp.
As I document in my new book "The Lost City of Z: A Tale of Deadly Obsession in the Amazon," even today parts of the Amazon--a wilderness area virtually the size of the continental United States--remain unknown. The Brazilian government estimates that there are more than sixty tribes that are secluded in the jungle.