 Appraisers often use extreme examples to demonstrate fuzzy concepts.There are several philosophical examples lying outside the field of appraisal that are often used to illustrate the differences between extraordinary assumptions, hypothetical conditions, and general assumptions or limiting conditions.Classic examples of hypothetical conditions include 

Examples of extraordinary assumptions used in the course of analysis might include

One of the more troublesome examples of the distinction between extraordinary assumptions and hypothetical conditions regards the valuation of property with proposed improvements or proposed alterations.