Some indicators are better than others in certain circumstances when deciding what projects to take on and which one to reject. I know that Net Present Value, or NPV is usually the most accurate.

What are some other methods of evaluating whether to go forward or not with a project? Make a table with some rules!

For example, some answers would look like:

For two mutually exclusive projects, I would use the ...... rule.

For projects with different lives, I would use the ....rule.

Give as many examples as you can.