As a tool for risk analysis, what are the advantages and disadvantages of sensitivity analysis? Break-even analysis?

The advantages of sensitivity analysis as a risk analysis tool are as follows.
 It is a useful technique to identify the critical input or independent variables which tend to
have a huge impact on the investment project feasibility. As a result, the risk mitigation
efforts could be directed towards these variables rather than the complete project.
 It also enhances the understanding of the overall project by increasing the understanding of
how the cash flows are being generated for the project.
 It enables in rejection of...