How collective denial is harming science and the societies we live in

Denialism is an expansion, an intensification, of denial. At root, denial and denialism are simply a subset of the many ways humans have developed to use language to deceive others and themselves. Denial can be as simple as refusing to accept that someone else is speaking truthfully. Denial can be as unfathomable as the multiple ways we avoid acknowledging our weaknesses and secret desires.

Denialism is more than just another manifestation of the humdrum intricacies of our deceptions and self-deceptions. It represents the transformation of the everyday practice of denial into a whole new way of seeing the world and – most important – a collective accomplishment. Denial is furtive and routine; denialism is combative and extraordinary. Denial hides from the truth, denialism builds a new truth favourable to them. 

In some ways, denialism is  not a good term. No one calls themselves a “denialist”, and no one signs up to all forms of denialism. In fact, denialism is founded on the assertion that it is not denialism. Therefore, vested interests have turned it into public dogma and this lead to collective denialism when entire societies and groups follow it as their policy.

A few examples:  The arguemnt that Holocaust (and other genocides) never happened, that anthropogenic (human-caused) climate change is a myth, that Aids either does not exist or is unrelated to HIV, that evolution is a scientific impossibility, and that all manner of other scientific findings   must be rejected.

There is no doubt that denialism is dangerous. In some cases, we can point to concrete examples of denialism causing actual harm. In South Africa, President Thabo Mbeki, in office between 1999 and 2008, was influenced by Aids denialists such as Peter Duesberg, who deny the link between HIV and Aids (or even HIV’s existence) and cast doubt on the effectiveness of anti-retroviral drugs. Mbeki’s reluctance to implement national treatment programmes using anti-retrovirals has been estimated to have cost the lives of 330,000 people. On a smaller scale, in early 2017 the Somali-American community in Minnesota was struck by a childhood measles outbreak, as a direct result of proponents of the discredited theory that the MMR vaccine causes autism, persuading parents not to vaccinate their children.