Epistemology, a classic topic in philosophy, often conjures up surreal discussions about how one is to know if one is not permanently in a dream, or if one is nothing more than the thoughts of a disembodied brain kept alive in some laboratory. But leaving aside these teasing puzzles, the core issue is about how one can determine if what one believes to be true, is in fact true.
It turns out that while speculating idly by oneself may be fun, if one is to get through life, one has to learn from experience what is dependable and what is dubious. We cannot afford to suspend all beliefs or hold arbitrary assumptions when we might end up being seriously harmed. Our experiences are what we have to work with to help us interpret what is happening now and anticipate what we may come across in the future.
Philosophers such as Francis Bacon, David Hume, J. S. Mill, John Dewey, Ludwig Wittgenstein, Karl Popper, have in their different ways explained why we need to refer to our experiences – gathering evidence, conducting experiments, exchanging observations, testing predictions – to inform our views on what we may provisionally claim to know, subject to future reviews and revisions. In practice, this involves openness in communications, recognition of acquired expertise, impartial adjudication of rival claims, cooperation in research and examination, and deliberative assessment that is free from coercion, bribery and deception.
It is therefore essential for a broadly communitarian – inclusively empirical, openly cooperative – form of epistemology to prevail in society if we are to be able to have any kind of common understanding and shared evaluative processes relating to what are acceptable claims and what should be rejected. This has a number of key implications.
First, education should not be a system of dogmatic transmission of ‘truths’, but ought to nurture cooperative enquiry, evidence-based scrutiny, and a critical understanding of how truth-claims should in general be assessed and where appropriate, revised. Everyone should learn about the empirical basis of knowledge so that all are vigilant in guarding against claims which do not stand up to objective scrutiny, and insistent on demanding verifiable validation beyond pseudo-justifications such as ‘I just know’, ‘I can tell my children whatever I want’, ‘I heard it from God’, or ‘this has always been the position of my people’.
Secondly, just as we do not allow people to inflict harm on others by direct physical acts, we must not permit harm to be done by epistemological manipulations. Lies, malicious rumours, fallacious theories, distorted reports, biased data presentations, can all lead to people hurting themselves as well as others. Societies are already damaged through countless citizens being misled into believing that something dangerous is harmless, or that something innocuous poses the most terrible threat. The relativist delusion that ‘everyone is entitled to their own view’ has to be put aside, especially when accurate statements are dismissed by charlatans as ‘fake news’, while falsehoods are propagated as (in some cases literally) gospel.
Thirdly, pedagogical and regulatory actions need to be guided by communitarian evaluative capability. In our research institutions; professional standards bodies; authorised investigators; recognised judges and adjudicators, we need training in conducting objective examination, cultivation of open-mindedness and impartiality, organisational support for continuous development, and safeguards against threats and corruption. Collectively, they enable us to differentiate, with confidence and integrity, what claims we can rely on, what need further examination, and what should be rejected.
Ignorance spreads when people buy into the nonsense of ‘nobody really knows anything’. Con merchants thrive when people embrace falsehoods more readily than truths. We need sound epistemological thinking to reinforce the educative, communicative, and investigative practices we have, to ensure that our experiences systematically inform the way claims and assertions are evaluated.
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For more on epistemology and practical policies, explore the essays collected in What Should Citizens Believe.