Heuristics: Daniel Kahneman vs Gerd Gigerenzer

We examine the notion of a heuristic on the basis of the accounts presented by Daniel Kahneman and Gerd Gigerenzer. The background of our analysis is the use of this concept in Computer Science. The aim of the work is to state a neutral (with respect to its evaluation as a method of rational behavior) definition of a heuristic and to point out the consequences it has for understanding the notion of rationality.