Formulating a strategy is always a gamble whose outcome is uncertain. Although the technique and the planning method may have been ideal, it remains an imperfect process due to various factors: a)the strategic choice may not have been the best; b) some
factors may not have been sufficiently evaluated; c) implementation errors may have been made; d) the expected impact of the actions chosen may not have the scope initially envisaged; and e) during the implementation of a strategic plan, the external environment or the HO may undergo changes that invalidate or modify the initial analysis.