Inconsistent Planning: When in Doubt, Toss a Coin!

One of the most widespread human behavioral biases is present bias -- tendency to overestimate current costs by a factor. Kleinberg and Oren (2014) introduced an elegant graph-theoretical model inconsistent planning capturing behavior present-biased agent accomplishing set actions. The essential measure system cost irrationality ratio total actions performed optimal cost. This vital for task designer estimate aftermaths related time-inconsistent planning, including procrastination abandonment. As we prove in this paper, highly susceptible agent's choices when faced with few possible equal estimated costs. To address issue, propose modification Kleinberg-Oren's planning. In our model, selects from several options minimum prescribed cost, he uses randomized procedure. We explore algorithmic complexity computing estimating new model.