Inside view vs. outside view

The inside view and the outside views are two alternative approaches to forecasting. Whereas the inside view attempts to make predictions based on an understanding of the details of a problem, the outside view instead looks at similar past situations and predicts based on these outcomes. For example, in trying to predict the time it will take a team to design an academic curriculum, a forecaster can either look at the characteristics of the curriculum to be designed and of the curriculum designers (inside view) or consider the time it has taken past teams to design similar curricula (outside view) (Kahneman & Lovallo 1993).