[1][2][3] It is a problem-solving strategy appropriate when "facts [are] uncertain, values in dispute, stakes high and decisions urgent", conditions often present in policy-relevant research.
In those situations, PNS recommends suspending temporarily the traditional scientific ideal of truth, concentrating on quality as assessed by internal and extended peer communities.
[9] For Carrozza[10] PNS can be "framed in terms of a call for the ‘democratization of expertise’", and as a "reaction against long-term trends of ‘scientization’ of politics—the tendency towards assigning to experts a critical role in policymaking while marginalizing laypeople".
A recent review of academic literature conducted on the Web of Science and encompassing the topics of Futures studies, Foresight, Forecasting and Anticipation Practice[16] identifies the same paper as "the all-time publication that received the highest number of citations".
For applied research science's own peer quality control system will suffice (or so was assumed at the moment PNS was formulated in the early nineties), while professional consultancy was considered appropriate for these settings which cannot be ‘peer-reviewed’, and where the skills and the tacit knowledge of a practitioner are needed at the forefront, e.g. in a surgery room, or in a house on fire.
[19]) There are important linkages between PNS and complexity science,[20] e.g. system ecology (C. S. Holling) and hierarchy theory (Arthur Koestler), see e.g. the work of Joseph Tainter, Timothy F. H. Allen and Thomas W. Hoekstra on transition from fossil to renewable fuels.
[21] In PNS, complexity is respected through its recognition of a multiplicity of legitimate perspectives on any issue; this is close to the meaning espoused by Robert Rosen (theoretical biologist).
Rather, they will form an ‘extended peer community’, sharing the work of quality assurance of the scientific inputs to the process, and arriving at a resolution of issues through debate and dialogue.
[24] In PNS extended peer communities are spaces where perspectives, values, styles of knowing and power differentials are expressed in a context of inequalities and conflict.
"[32] For Peter Gluckman (2014), chief science advisor to the Prime Minister of New Zealand, post-normal science approaches are today appropriate for a host of problems including "eradication of exogenous pests […], offshore oil prospecting, legalization of recreational psychotropic drugs, water quality, family violence, obesity, teenage morbidity and suicide, the ageing population, the prioritization of early-childhood education, reduction of agricultural greenhouse gases, and balancing economic growth and environmental sustainability".
[38] Reviews of the history and evolution of PNS, its definitions, conceptualizations, and uses can be found in Turnpenny et al., 2011,[39] and in The Routledge Handbook of Ecological Economics (Nature and Society).
[57] On 25 March 2020, in the midst of the COVID-19 pandemic, a group of scholars of post-normal orientation published on the blog section of the STEPS Centre (for Social, Technological and Environmental Pathways to Sustainability) at the University of Sussex.