Avoid persecution of the responsible parties if there are overruns, otherwise in future the managers will be reluctant to give any information for fear that it will be held against them. Project control should be seen as a tool to assist managers reach their objectives, not as a weapon of attack.

In venturing to write about successful offset policy and experience in different countries, the basic problem faced is that of unavailability of data. There are no universally laid down parameters or measures to weigh the costs and benefits of offset programmes. Even if some countries have individually undertaken an exercise to evaluate such costs and benefits, the information is not always available in the public domain. Cross country comparisons would also not yield consistent results.