Agents who correctly record information from their observations, and industriously draw correct conclusions from their evidence, may be rational in some Olympian sense. But they are still cold-blooded recording devices. But knowledge is scarce, and rationality does not reside in always being cautious, and continual correctness. Its peak moments occur with warm-blooded agents, who are opinionated, make mistakes, but who subsequently correct themselves. Thus, rationality is about the dynamics of being wrong just as much as about that of being right: through belief revision, i.e., learning by giving up old beliefs. Or maybe better, rationality is about a balance between two abilities: jumping to conclusions, and subsequent correction if the jump was over-ambitious.

Johan van Benthem - in "Logical Dynamics of Information and interaction"(draft .pdf)