In the first chapter of Nudge (Biases and Blunders), Thaler and Sunstein list three heuristics identified by Tversky and Kahneman (1974). Choose one of these (anchoring, availability, or representativeness) and discuss how the authors' conclusion that "although rules of thumb can be very helpful, their use can also lead to systematic bias" is informed by the particular heuristic you have chosen to discuss.