They considered it to be a success because had it been it was a failure they would not have come together for the rational choice theory.
Explanation:
controlled Trail:" is a study in which people are allocated at random (by chance alone) to receive one of several clinical interventions".
Rational Choice theory: "Rational choice theory assumes that individuals are rational actors using rational information to try to actively maximize their advantage in any situation and therefore consistently trying to minimize their losses"
A disaster is a serious disruption to the functioning of a community, which causes human, material, economic and environmental losses beyond a community's ability to cope. Disaster management aims to lessen the impacts of disasters, minimizing losses of life and property.