Sustainability within the Social Assistance System of the Republic of South Africa

The Republic of South Africa is a unique place on the African continent: it was the only place which had a bloodless transition process when the regime changed from a minority government to a democratic one. During the transition period unemployment was at a level of 13 percent, however it rose to 30 percent in just six years time. In the paper we analyse what kind of attempts does the government make in order to sustain the social assistance system, and keep its promise to the voters by providing better living conditions and protection as opposed to apartheid.

Pairwise comparison matrices and the error-free property of the decision maker

Pairwise comparison is a popular assessment method either for deriving criteria-weights or for evaluating alternatives according to a given criterion. In real-world applications consistency of the comparisons rarely happens: intransitivity can occur. The aim of the paper is to discuss the relationship between the consistency of the decision maker—described with the error-free property—and the consistency of the pairwise comparison matrix (PCM). The concept of error-free matrix is used to demonstrate that consistency of the PCM is not a sufficient condition of the error-free property of the decision maker. Informed and uninformed decision makers are defined. In the first stage of an assessment method a consistent or near-consistent matrix should be achieved: detecting, measuring and improving consistency are part of any procedure with both types of decision makers. In the second stage additional information are needed to reveal the decision maker’s real preferences. Interactive questioning procedures are recommended to reach that goal.