A crucial issue in the early stages of a system's design and development is reliability allocation. To reach the desired reliability, a variety of reliability allocation strategies are applied. Among them, feasibility of objectives (FOO) technique is frequently employed for system reliability allocation. However, this method has two major drawbacks. The measurement scale and the order weight of the reliability allocation factors is not taken into account is this method.

Another important factor of decision making is the consideration of different mind-set of decision makers. Practically, decision makers in multi-criteria decision making (MCDM) are not in the same mind-set level.