We are susceptible to fake news, dubious science and clever advertisers. Our votes can be swayed by duplicitous politicians and terrorist shocks. More and more adults subscribe to irrational conspiracy theories. People who believe the Earth is flat are increasing exponentially via the web. Indubiety (poorly calibrated skepticism) is an impediment to our culture and social progress as serious as illiteracy was in the past, and for the same reasons. There are ways that people can learn to be less gullible and more discerning. We need to teach these ways in schools and colleges.

Indubiety is badly calibrated skepticism. It includes believing too readily on little evidence and thus being open to error or deception, or having unjustified certainty about a belief or being innocent in a way that can be dangerous. It also includes stubbornly or inexplicably not believing well justified inferences despite abundant evidence. Dubiety, in contrast, is a healthy, well calibrated feeling of skepticism that people need to navigate the murky waters of advertising, propaganda, half truths, casual lies, and viral misunderstandings.

Historians talk about the development of western culture as a series of epochs: stone age, followed by the bronze and iron ages, and then the industrial and post-industrial ages, and, most recently, the information age. Each age is heralded by a handful of technological advances that reverberate throughout society, revolutionizing the means of production, transforming social organization, and generating new ideologies. Transition from one age to the next requires large-scale adoption of new skills and ways of thinking. The industrial revolution of the 18th and 19th centuries, for example, resulted in the need for an increasingly skilled workforce and greatly expanded managerial class. Widespread illiteracy presented a formidable obstacle to cities, states, and nations as they attempted to meet the demands of new industry. Forward-thinking nations mounted literacy campaigns to enhance their productivity and international competitiveness. To this day, illiteracy continues as a significant barrier to industrialization in developing countries. However, by the 20th century, developed countries had achieved near universal literacy.

In addition to literacy, citizens of the post-industrial and increasingly participatory democracies of the 20th century required an unprecedented level of mathematical adroitness. Numerical skills once needed only by accountants and a few specialists became necessary as people came to routinely work at complex technological professions and negotiate complicated long-term personal investment and insurance decisions. Moreover, to participate fully in the democratic process, the public became required to comprehend the comparative costs and benefits of important policy alternatives. As with the literacy campaigns of the 19th century, the 20th century saw calls for ending innumeracy as nations with numerate populaces enjoyed a competitive edge in global markets. As a consequence, the basic mathematical competence of the public improved.

The information age is characterized by an unprecedented dependence on the analysis and understanding of complex data at all levels of society. Such data are fundamentally uncertain and all purportedly precise estimates are just that—estimates, which are subject to imprecision, error, and a host of other sources of incertitude and variability. Indubiety is a fundamental contributor to imprudent, inefficient, contentious, or counterfactual decisions in virtually all domains of public and private life in the information age. Thus, just as the industrial age required widespread literacy and post-industrial society required widespread numeracy, so competitive and truly democratic societies in the information age will require dubiety.

If you are interested in our ideas about the need to foster dubiety and how we might combat indubiety, request further information from the RiskComm Study Group at research@riskinstitute.uk.