There are four main problems associated with traditional approaches that we need to overcome if we are to make the process of understanding and communicating performance fit for the modern world:
My criticisms of variance analysis are directed at its use to analyse performance. This shouldn’t be taken to mean that I believe all forms of comparison are invalid. Quite the contrary. A number in isolation signifies nothing. It has to be compared to something else to mean something – the issue is what should it be compared to and what conclusions can be drawn from this?