“…For definition of iatrogenic, see Collins English Dictionary ( 2020 ). [2] For a summary on “wicked problems and tame problems”, see Xiang ( 2021a , pp.76–77); for the origin of the conceptions, see Churchman ( 1967 ) and Skaburskis ( 2008 ); for a recent literature review, see Termeer et al ( 2019 ). [3] A common threat is a danger—something or someone that can hurt or harm people—that may happen to every individual human being in a certain place (e.g., the earth, a country, a region, a city, a village, or a community) to the extent that no one in that place is immune; a common threat can come from a natural disaster, a human conflict, or a combination of both (Palko & Xiang 2020 , p.260; Xiang 2020 , p.200).…”