Consider the responses to a survey conducted of geologists working in the mining indus- try.46 The survey put the following question to the geologists: “If an economic deposit was discovered tomorrow, how many years would pass before it could be put into pro- duction? Consider only typical problems, planning permission, objections, engineering studies, etc.” In responding, the geologists provided a range, from 5 to 10 years. Histori- cally, the typical project has taken 10 years. Discuss whether the geologists’ responses exhibit any behavioral biases.