The introduction of popular experiential products is often accompanied by temporary stock outs. While the official story behind these supply shortages is typically one of capacity constraints, anecdotal evidence suggests that, at least in some cases, early stock outs may be firm-induced. This paper proposes a mechanism based on social learning (SL), through which early-scarcity strategies may be beneficial for the firm. A crucial component of this mechanism is that consumers, owing to the informational and cognitive burdens imposed on them by Bayesian learning, are less-than-fully rational (quasi-Bayesian) in a manner that is consistent with existing empirical evidence. We show that, under certain conditions, supply shortages can be benefic...