He did it again: Boris Johnson, UK foreign secretary, exhumed the old referendum-campaign lie that leaving the EU would free up £350m a week for the National Health Service. I think we can skip the well-worn details, because while the claim is misleading, its main purpose is not to mislead but to distract. The growing popularity of this tactic should alarm anyone who thinks that the truth still matters.
You don’t need to take my word for it that distraction is the goal. A few years ago, a cynical commentator described the “dead cat” strategy, to be deployed when losing an argument at a dinner party: throw a dead cat on the table. The awkward argument will instantly cease, and everyone will start losing their minds about the cat. The cynic’s name was Boris Johnson.
The tactic worked perfectly in the Brexit referendum campaign. Instead of a discussion of the merits and disadvantages of EU membership, we had a frenzied dead-cat debate over the true scale of EU membership fees. Without the steady repetition of a demonstrably false claim, the debate would have run out of oxygen and we might have enjoyed a discussion of the issues instead.
My point is not to refight the referendum campaign. (Mr Johnson would like to, which itself is telling.) There’s more at stake here than Brexit: bold lies have become the dead cat of modern politics on both sides of the Atlantic. Too many politicians have discovered the attractions of the flamboyant falsehood — and why not? The most prominent of them sits in the White House. Dramatic lies do not always persuade, but they do tend to change the subject — and that is often enough.
It is hard to overstate how corrosive this development is. Reasoned conversation becomes impossible; the debaters hardly have time to clear their throats before a fly-blown moggie hits the table with a rancid thud.
Nor is it easy to neutralise a big, politicised lie. Trustworthy nerds can refute it, of course: the fact-checkers, the independent think-tanks, or statutory bodies such as the UK Statistics Authority. But a politician who is unafraid to lie is also unafraid to smear these organisations with claims of bias or corruption — and then one problem has become two. The Statistics Authority and other watchdogs need to guard jealously their reputation for truthfulness; the politicians they contradict often have no such reputation to worry about.
Researchers have been studying the problem for years, after noting how easily charlatans could debase the discussion of smoking, vaccination and climate change. A good starting point is The Debunking Handbook by John Cook and Stephan Lewandowsky, which summarises a dispiriting set of discoveries.
One problem that fact-checkers face is the “familiarity effect”: the endless arguments over the £350m-a-week lie (or Barack Obama’s birthplace, or the number of New Jersey residents who celebrated the destruction of the World Trade Center) is that the very process of rebutting the falsehood ensures that it is repeated over and over again. Even someone who accepts that the lie is a lie would find it much easier to remember than the truth.
A second obstacle is the “backfire effect”. My son is due to get a flu vaccine this week, and some parents at his school are concerned that the flu vaccine may cause flu. It doesn’t. But in explaining that I risk triggering other concerns: who can trust Big Pharma these days? Shouldn’t kids be a bit older before being exposed to these strange chemicals? Some (not all) studies suggest that the process of refuting the narrow concern can actually harden the broader worldview behind it.
Dan Kahan, professor of law and psychology at Yale, points out that issues such as vaccination or climate change — or for that matter, the independence of the UK Statistics Authority — do not become politicised by accident. They are dragged into the realm of polarised politics because it suits some political entrepreneur to do so. For a fleeting partisan advantage, Donald Trump has falsely claimed that vaccines cause autism. Children will die as a result. And once the intellectual environment has become polluted and polarised in this way, it’s extraordinarily difficult to draw the poison out again.
This is a damaging game indeed. All of us tend to think tribally about politics: we absorb the opinions of those around us. But tribal thinking pushes us to be not only a Republican but also a Republican and a vaccine sceptic. One cannot be just for Brexit; one must be for Brexit and against the UK Statistics Authority. Of course it is possible to resist such all-encompassing polarisation, and many people do. But the pull of tribal thinking on all of us is strong.
There are defences against the dead cat strategy. With skill, a fact-check may debunk a false claim without accidentally reinforcing it. But the strongest defence is an electorate that cares, that has more curiosity about the way the world really works than about cartoonish populists. If we let politicians drag facts into their swamp, we are letting them tug at democracy’s foundations.
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