Dr David Robert Grimes Profile picture
Oct 9, 2018 12 tweets 5 min read Read on X
Small thread on conspiracy theorists - it's tempting to dismiss such individuals as crackpots, but this misrepresents societal impact of what they do. Conspiracy theory is one of my research interests, so I thought it'd be useful to share some insights.. (1/n)
.. firstly, what do we mean by conspiratorial beliefs? These refer to narratives that postulate events in a given sphere are due to the machinations of some sinister cabal Stealing from one of my old papers, we might say.. (2/n)
... conspiratorial ideation is the tendancy to see conspiracies everywhere, and attribute events to conspiracy when there's no evidence to do so. Sometimes these people persist even when their assertions are readily debunked. But why? Let's explore! 3/n
..psychological literature suggests some major reasons. Firstly, conspiracy theories are paradoxically reassuring; events in life are largely random, yet a conspiracist sees simple reasons for events. It thus gives them a reassuring illusion of understanding, of meaning (4/n)
...this has some bizarre side-effects however; conspiracy theorists have a high selective tolerance for contradiction. In one study, the conspiratorially minded were able to accept idea Bin Laden was both dead & alive at once, SO LONG as both narratives involved conspiracy (5/n)
..this (probably) isn't to say they believe in some Schrödinger's Bin Laden who is simultaneously alive & dead, but that what chiefly matters to conspiracy theorists is the presence of conspiracy itself. The details & facts are largely irrelevant; they just need conspiracy (6/n)
...Conspiracy theorists also don't tend to have the finest reasoning skills. Anti-vax activists (deeply conspiratorial) have been studied in depth due to damage they do. Studies find they exhibit low cognitive complexity in thinking skills, & reliance on anecdote over data (7/n)
..but you know what the single biggest driver for conspiracy theorists is? Ego. Conspiracy theorists consider themselves superior to the deluded masses. The belief they have superior knowledge is seductive to them, boosting their self-esteem & self worth (8/n)
..it gives them a sense of superiority without actually having to do anything. So what if you're a well-regarded PhD in immunology? Conspiracy theorists still insist they know more about vaccines. A professor of climatology? They "know" global warming a hoax... (9/n)
... they'll talk with certainty too, over things that are inherently uncertain. Being a conspiracy theorist makes you feel special, even when you're pig-ignorant. It is choosing a parody of understanding over actually putting the spadework in to understand. It's pathetic (10/n)
...it is in this light you have to see conspiratorial musings. When a woefully unqualified ex-presidential candidate spreads falsehoods over the #HPVvaccine , this is simply because they're feeding their own ego at the cost of public health. They deserve contempt for this (11/n)
... please, realise these people are supremely arrogant, not just ignorant. That they are willing to risk people's lives to feed their own sense of superiority should render them beyond contempt, not worthy of the attention they crave. Please don't let them sway you (12/12).

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More from @drg1985

Sep 26, 2018
As a cancer researcher & science communicator, I have very mixed feelings on proposed #alcohol cancer labelling for drinks. I'll try here to elucidate why, and you can tell me whether you agree or not (1/n)
...so firstly, is alcohol a carcinogen? Almost undoubtedly, yes. IARC grade it a class 1 carcinogen, alongside asbestos, ionizing radiation, & smoking. We even know some mechanisms of damage. So labels should be a no-brainer, right? (2/n)
...well not quite. The real question isn't just whether something causes cancer (oxygen, processed meat, and sunlight are also Class 1 carcinogens for example) but how much it increases our risk of getting cancer. We need both bits of information to make a call (3/n)
Read 13 tweets
Aug 1, 2018
Short thread on #CervicalCheck (CC) - there's an abundance of emotive misinformation doing the rounds that needs to be challenged. There's an ugly story here of a disconnect between evidence, politics, and law. It's confusing but important to understand. So, let's delve (1/n)
...I wrote an explainer on this for the @IrishTimes way back in May, and while the facts haven't hugely changed since then, the rhetoric has. Firstly, CC saves lives. It has pushed down the national rate of cervical cancer, and as a screening programme has been a success (2/n)
..but it's EXTREMELY important to understand a screening test is NOT a diagnostic test. CC is not a diagnostic for cancer - it's a wide-net that looks for indicators in healthy people that might indicate an increased cancer risk in he future. It is *not* a cancer test. (3/n)
Read 21 tweets
Jul 27, 2018
Thread: Sweltering in this heatwave? Me too. And as this article makes clear, it's largely down to climate change. But here's how climate change 'skeptics' are going to try and play it - and how to not let them (1/n) theguardian.com/environment/20…
..the go argument of climate change 'skeptics' (more on that term later) is to argue that 'computer models' are basically toys with no predictive value, a blackbox that means nothing. They'll fixate on paragraphs like this. So why is that wrong? (2/n)
..so my background - I work in mathematical modelling of physical phenomena (cancer growth, radiation dose, etc). Climate 'skeptics' pivoting on a devious mistruth. Broadly speaking, there are 2 major classes of model: phenomenological and mechanistic models. I'll explain (3/n).
Read 12 tweets
Jan 17, 2018
Where to even start? This kind of nonsense is extremely damaging to patients with cancer & their families- and to medical professionals treating them. I'll try list the major points of contention here in a whistle-stop tour....
Firstly, medical professionals not recommending cannabis for cancer patients NOTHING to do with lack of med. knowledge - it's been studied to death (>10k studies , see my previous piece here: health.spectator.co.uk/the-rise-of-th… ) and the reality is that it has limited efficacy..
...cannabis does NOT cure cancer, and it isn't even especially effective for symptomatic relief. If it was, we'd use it. In reality, we only use it as a last resource BECAUSE it's not very effective, and can make things (such as nausea) worse for many patients. ...
Read 8 tweets
Sep 29, 2017
No, screw this - join me on a rant. The ketogenic brigade make these claims as their business model. So let's puncture it shall we?! (1/n)
..so what is the Warburg effect? The observation that cancer cells rely much more on inefficient glycolysis rather than healthy cells (2/n)
..in 1924, Warburg postulated that cancer was CAUSED by cells shifting their source of energy production from oxygen to glucose (3/n)
Read 17 tweets

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