different world views and different frames for understanding the problem.
# The constraints that the problem is subject to and the resources needed to solve it change over time.
# The problem is never solved definitively.

Although Rittel and Webber framed the concept in terms of social policy and planning, wicked problems occur in any domain involving stakeholders with differing perspectives. Recognising this, Rittel and Kunz developed a technique called Issue-Based Information System