People with a commercial hat on will be more interested in stress-testing the business represented by a financial model, and I think it is fair to say that they will assume that the underlying logic of a financial model is all correct. However, from a model developer point of view (which could often be the same person changing hats), it is important to test the underlying logic of a model during the development process as described in the article.

A few more similar tests that could be performed include:
- An NPV calculated with a discount rate of zero must equal the sum of the cash flows.
- An NPV calculated with a discount rate equal to the IRR must equal zero (it is often forgotten that this is the definition of IRR in the first place).
- A weighted average must always be between the minimum and maximum values.
- What happens if interest rates are set to zero?
- What happens if exchange rates are set to zero?
- What happens if depreciation periods are set to one?
- What happens if the tax rate is set to zero or 100%?

From a commercial point of view many of these tests may seem non-sensical, but the intention of these tests is to check the model logic only, not commercial robustness.