How come a remarkably intelligent, grounded and well-informed political leader like Helen Zille can make such a disastrous choice, compound it by panicky, ill-considered implementation and drag her party along with her? Part of the explanation must lie in her own personality and temperament and dynamics within the party. But much rests on a set of erroneous (or partially erroneous) assumptions about the situation in South Africa and misperceptions around the DA's image in the eyes of the electorate.
Undoubtedly, any analysis of the DA's performance must deal with the observable facts of its decisions, their outcomes and the multi-dimensional environment (physical, economic, socio-cultural, political and historical) in which it operates. But equally, that environment is partly a product of a multitude of minds, especially the minds of its leadership, motivated by a multitude of emotional and social forces of varying degrees of opacity. This analysis will attempt to partial justice to both.
It is possible to imagine some enormously powerful computer, equipped with the most realistic current algorithms into which enormous quantities of politically relevant data (so-called "big data") can be fed and which spits out various scenarios. These can then be compared to outcomes (by the self-same computers and their human minders) to initiate a cycle of improved performance. In theory at least, such simulations would allow for better understanding of complex socio-political-cultural-economic systems and, again in theory mainly, aid timely and effective interventions.
This is only partly fantasy. Prototypes of such machines are already operative and there is an expanding body of theory and observation linked to computer-based algorithms bearing on the failure (or success) of states and democracies. None of this yet constitutes a mature science capable of accurate prediction, but South Africa, by even conservative reckonings (including "gut" instinct), would land squarely in the list of endangered species. Let us count some of the ways:
A long and violent history of ethnic conflict
Massive persisting inequalities of all kinds still partly aligned along ethnic lines