 If in the course of investigation, inspection, or research the appraiser discovers evidence which might call particular assumptions into question, he may still have a further decision to make regarding the scope of work.Depending on the needs or expectations of the client, the appraiser may choose to continue to investigate the condition to determine its veracity or he may choose to continue to assume the veracity of the assumption despite indications to the contrary, in which case the assumption would be an extraordinary assumption and have to be reported as such.Limiting conditions may frame the appraisal problem in such a way that facts or conditions which are even known to be false do not have to be treated as hypothetical conditions.