*3.1.10 Transforming the future*

The prognostic technique, hindsight and the transcendence method allow the proposed futures to be validated through experts. According to Escobar Jasmine, expert judgement is defined as an informed opinion of people with a track record in the subject matter, who are recognised by others as qualified experts in the subject matter, and who can provide information, evidence, judgements and assessments. The number of judges to be used in a trial depends on the level of expertise and diversity of knowledge; however, the decision on what number of experts is appropriate varies among authors, with some suggesting a range of two to twenty experts, while others state that ten would provide a reliable estimate of the validity of the information [118]. The selection of the number and quality of experts were made as follows:


**Figure 13.** *Expert validation process.*

**Figure 13** shows this validation, where chaos and GAIA are the most extreme undesirable and desirable futures, respectively, while progress and evolution are the average and possibly achievable futures by their events and forecasts.
