1) Foresight has evolved as a tool to support forward-looking decision making in policy and business by bringing together stakeholder perspectives on alternative futures. However, its impact needs to be realistically assessed to manage expectations.
2) The article examines foresight's role in innovation policy. It reviews evaluations of several national foresight programs and develops a framework to classify the impacts of different prospective analysis types on policy.
3) Factors driving the use of foresight in policy include increased uncertainty, the need for flexibility, and intensifying social and accountability pressures surrounding new technologies and public spending. Foresight can help policymakers identify weak signals necessitating changes and support "quantum leaps" in policy.