 The typical behavior of the majority, i.e., not switching, may be explained by phenomena known in the psychological literature as 1) the endowment effect (Kahneman et al., 1991), in which people tend to overvalue the winning probability of the already chosen – already "owned" – door; 2) the status quo bias (Samuelson and Zeckhauser, 1988), in which people prefer to stick with the choice of door they have already made; and 3) the errors of omission vs. errors of commission effect (Gilovich et al., 1995), in which, ceteris paribus, people prefer any errors for which they are responsible to have occurred through 'omission' of taking action, rather than through having taken an explicit action that later becomes known to have been erroneous.Experimental evidence confirms that these are plausible explanations that do not depend on probability intuition (Kaivanto et al., 2014; Morone and Fiore, 2007).Another possibility is that people's intuition simply does not deal with the textbook version of the problem, but with a real game show setting (Enßlin and Westerkamp, 2018).