“…Many researchers have described complexity as a critical topic in the area of project management research (Gidado, 1996;Hass, 2008;Owens, Ahn, Shane, Strong, & Gransburg, 2011;Bosch-Rekveldt, 2011;Lehtiranta, 2011;Puddicombe, 2012;Ahern, Leavy, & Byrne, 2013;Lu et al, 2015;Abdou et al, 2016;Kiridena & Sense, 2016;Ji, AbouRizk, Zaiane, & Li, 2018). The meaning of the word "complexity" was ambiguous and lacked a standard definition for many years.…”