“…The experts use methods of cognitive science and fuzzy logic. This approach has been used to address difficult problems with very useful results: in energy (Kyriakarakos et al, 2012;Mahboub et al, 2019;Pereira et al, 2020), in health (Amirkhani et al, 2017;Apostolopoulos & Groumpos, 2020;Bevilacqua et al, 2012;Bhatia & Kumar, 2015;Bhatia et al, 2014;de Moraes Lopes et al, 2013;Janmenjoy et al, 2015;Oye & Thomas, 2019;Papageorgiou, 2012;Savage, 2019), in business and economics (Lopez & Ishizaka, 2019;Paes de Faria et al, 2020;Groumpos, 2015;Neocleous & Schizas, 2012), in social and international affairs (Groumpos, , 2019Cole & Persichitte, 2000;Mago et al, 2013;Wang et al, 2022), on COVID-19 (Akinnuwesi et al, 2021;Goswami et al, 2021;Groumpos, 2020Groumpos, , 2021, in agriculture (Christen et al, 2015;Correa et al, 2012;Groumpos et al, 2016), and in renewable energy sources (Çoban & Onar, 2017;Jetter & Schweinfort, 2011;Karlis et al, 2007). Reviews of FCMs for several applications are provided in Papageorgiou and Salmeron (2013) and Janmenjoy et al (2015).…”