ABSTRACT
All valuers are familiar with the need for efficient means of storing and gaining access to data, together with the need for efficient aids to calculation in the form of valuation tables or electronic calculators. The computer combines both these functions together with other aids to the professions of the land. The computer is a sophisticated and very fast-calculating machine with an ability to record information and present it on demand neatly and rapidly and in all kinds of arrays. Scenario testing involves changing a combination of a number of inputs and the output is then calculated with this combination of changes. In a more sophisticated form of sensitivity analysis, probability can be taken into account. This assesses the probability of the inputs being at a certain level and therefore can provide an even more sophisticated result. Expert systems are models and simulations that are at the leading edge of sophistication.
