The heuristics and biases movement proposed that people use heuristics like availability and representativeness to judge probabilities. It also pointed out that people's decisions are prone to framing effects, omission biases, focusing illusions, and so forth. The most important point made by the heuristics and biases movement is

"i know there may have been concerns that it may be too vague or too costly, or may lead endlessly to litigation. but i want to reassure you right now that my administration and the united states congress have carefully crafted this act. we've all been determined to ensure that it gives flexibility, particularly in terms of the timetable of implementation, and we've been committed to containing the costs that may be incurred. let the shameful wall of exclusion finally come tumbling down." president george h.w. bush, july 26, 1990 the act president bush speaks of was enacted to guarantee equal rights to people of all races. people of all sexes. eliminate people who are homeless. people with disabilities.

Census data is an example of: public information. private behavior. private information. public behavior.

Which of the following items would serve as a primary source for a historian studiying the american civil war