critical view point on COST BENEFIT ANALYSIS

Cost Benefit Analysis or CBA is a relatively simple and widely used technique for deciding whether to make a change. We simply add up the value of the benefits of a course of action, and subtract the costs associated with it. Benefits are most often received over time. We build this effect of time into our analysis by calculating a payback period.cost-benefit analysis is carried out using only financial costs and financial benefits where large sums of money are involved (for example, in financial market transactions), project evaluation can become an extremely complex and sophisticated art.It is a powerful and relatively easy tool which is used for deciding whether to make a change. touse this tool we firstly have to work out how much the change will cost to make and then calculate the benefit you wil get from it.
where costs and benefits are paid or received over time, we work out the time for the benefits to repay the costs. cost benefit analysis can be carried out using financial costs and financial benefits.The costs and benefits of the impacts of an intervention are evaluated in terms of the public's willingness to pay for them or willingness to pay to avoid them .