Editing Delphi method (section)

===Role of the facilitator===
The person coordinating the Delphi method is usually known as a ''facilitator'' or Leader, and facilitates the responses of their ''panel of experts'', who are selected for a reason, usually that they hold knowledge on an opinion or view. The facilitator sends out questionnaires, surveys etc. and if the panel of experts accept, they follow instructions and present their views. Responses are collected and analyzed, then common and conflicting viewpoints are identified. If consensus is not reached, the process continues through thesis and antithesis, to gradually work towards synthesis, and building consensus. 

During the past decades, facilitators have used many different measures and thresholds to measure the degree of consensus or dissent. A comprehensive literature review and summary is compiled in an article by von der Gracht.<ref>{{cite journal | vauthors = von der Gracht H | year = 2012 | title = Consensus Measurement in Delphi Studies - Review and Implications for Future Quality Assurance | journal = Technological Forecasting and Social Change | volume = 79 | issue = 8| pages = 1525–1536 | doi = 10.1016/j.techfore.2012.04.013}}</ref>