If you don’t hear from me for the rest of the afternoon, it is because I’ve buried my head into these 164 mini-essays by a panoply of intelligent thinkers, all answering the question: What scientific concept would improve everybody’s cognitive toolkit?
Among the people responding are: Clay Shirky, Brian Eno, J. Craig Venter, Richard Dawkins, and Xeni Jardin. I’m particularly fond of the answer by Mr. Dawkins.
Let’s not give the defeatist answer and blame it all on stupidity. That’s probably part of the story, but let’s be optimistic and concentrate on something remediable: lack of training in how to think critically, and how to discount personal opinion, prejudice and anecdote, in favour of evidence. I believe that the double-blind control experiment does double duty. It is more than just an excellent research tool. It also has educational, didactic value in teaching people how to think critically. My thesis is that you needn’t actually do double-blind control experiments in order to experience an improvement in your cognitive toolkit. You only need to understand the principle, grasp why it is necessary, and revel in its elegance.
If all schools taught their pupils how to do a double-blind control experiment, our cognitive toolkits would be improved in the following ways:
1. We would learn not to generalise from anecdotes.
2. We would learn how to assess the likelihood that an apparently important effect might have happened by chance alone.
3. We would learn how extremely difficult it is to eliminate subjective bias, and that subjective bias does not imply dishonesty or venality of any kind. This lesson goes deeper. It has the salutary effect of undermining respect for authority, and respect for personal opinion.
4. We would learn not to be seduced by homeopaths and other quacks and charlatans, who would consequently be put out of business.
5. We would learn critical and sceptical habits of thought more generally, which not only would improve our cognitive toolkit but might save the world.