You may well, after reading this book, arrive at the important conclusion : ‘I don’t know!’ more frequently, and with less of a bad conscience than before. In fact there is no reason at all to feel uncomfortable about not knowing. On the contrary, you have just made one of the most important steps towards knowing.
Even in quite simple cases, the outcome of implementing our projects is difficult to predict with accuracy. Unexpected results or events become critical multipliers of the ultimate project attributes, and usually in the ‘wrong’ direction! There is a very generally applicable solution to this problem of result control.