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- May 2021There's one kind of opinion I'd be very afraid to express publicly.
- If someone I knew to be both a domain expert and a reasonable person
- proposed an idea that sounded preposterous, I'd be very reluctant
- to say "That will never work."Anyone who has studied the history of ideas, and especially the
- history of science, knows that's how big things start. Someone
- proposes an idea that sounds crazy, most people dismiss it, then
- it gradually takes over the world.Most implausible-sounding ideas are in fact bad and could be safely
- dismissed. But not when they're proposed by reasonable domain
- experts. If the person proposing the idea is reasonable, then they
- know how implausible it sounds. And yet they're proposing it anyway.
- That suggests they know something you don't. And if they have deep
- domain expertise, that's probably the source of it.
- [1]Such ideas are not merely unsafe to dismiss, but disproportionately
- likely to be interesting. When the average person proposes an
- implausible-sounding idea, its implausibility is evidence of their
- incompetence. But when a reasonable domain expert does it, the
- situation is reversed. There's something like an efficient market
- here: on average the ideas that seem craziest will, if correct,
- have the biggest effect. So if you can eliminate the theory that
- the person proposing an implausible-sounding idea is incompetent,
- its implausibility switches from evidence that it's boring to
- evidence that it's exciting.
- [2]Such ideas are not guaranteed to work. But they don't have to be.
- They just have to be sufficiently good bets — to have sufficiently
- high expected value. And I think on average they do. I think if you
- bet on the entire set of implausible-sounding ideas proposed by
- reasonable domain experts, you'd end up net ahead.The reason is that everyone is too conservative. The word "paradigm"
- is overused, but this is a case where it's warranted. Everyone is
- too much in the grip of the current paradigm. Even the people who
- have the new ideas undervalue them initially. Which means that
- before they reach the stage of proposing them publicly, they've
- already subjected them to an excessively strict filter.
- [3]The wise response to such an idea is not to make statements, but
- to ask questions, because there's a real mystery here. Why has this
- smart and reasonable person proposed an idea that seems so wrong?
- Are they mistaken, or are you? One of you has to be. If you're the
- one who's mistaken, that would be good to know, because it means
- there's a hole in your model of the world. But even if they're
- mistaken, it should be interesting to learn why. A trap that an
- expert falls into is one you have to worry about too.This all seems pretty obvious. And yet there are clearly a lot of
- people who don't share my fear of dismissing new ideas. Why do they
- do it? Why risk looking like a jerk now and a fool later, instead
- of just reserving judgement?One reason they do it is envy. If you propose a radical new idea
- and it succeeds, your reputation (and perhaps also your wealth)
- will increase proportionally. Some people would be envious if that
- happened, and this potential envy propagates back into a conviction
- that you must be wrong.Another reason people dismiss new ideas is that it's an easy way
- to seem sophisticated. When a new idea first emerges, it usually
- seems pretty feeble. It's a mere hatchling. Received wisdom is a
- full-grown eagle by comparison. So it's easy to launch a devastating
- attack on a new idea, and anyone who does will seem clever to those
- who don't understand this asymmetry.This phenomenon is exacerbated by the difference between how those
- working on new ideas and those attacking them are rewarded. The
- rewards for working on new ideas are weighted by the value of the
- outcome. So it's worth working on something that only has a 10%
- chance of succeeding if it would make things more than 10x better.
- Whereas the rewards for attacking new ideas are roughly constant;
- such attacks seem roughly equally clever regardless of the target.People will also attack new ideas when they have a vested interest
- in the old ones. It's not surprising, for example, that some of
- Darwin's harshest critics were churchmen. People build whole careers
- on some ideas. When someone claims they're false or obsolete, they
- feel threatened.The lowest form of dismissal is mere factionalism: to automatically
- dismiss any idea associated with the opposing faction. The lowest
- form of all is to dismiss an idea because of who proposed it.But the main thing that leads reasonable people to dismiss new ideas
- is the same thing that holds people back from proposing them: the
- sheer pervasiveness of the current paradigm. It doesn't just affect
- the way we think; it is the Lego blocks we build thoughts out of.
- Popping out of the current paradigm is something only a few people
- can do. And even they usually have to suppress their intuitions at
- first, like a pilot flying through cloud who has to trust his
- instruments over his sense of balance.
- [4]Paradigms don't just define our present thinking. They also vacuum
- up the trail of crumbs that led to them, making our standards for
- new ideas impossibly high. The current paradigm seems so perfect
- to us, its offspring, that we imagine it must have been accepted
- completely as soon as it was discovered — that whatever the church thought
- of the heliocentric model, astronomers must have been convinced as
- soon as Copernicus proposed it. Far, in fact, from it. Copernicus
- published the heliocentric model in 1532, but it wasn't till the
- mid seventeenth century that the balance of scientific opinion
- shifted in its favor.
- [5]Few understand how feeble new ideas look when they first appear.
- So if you want to have new ideas yourself, one of the most valuable
- things you can do is to learn what they look like when they're born.
- Read about how new ideas happened, and try to get yourself into the
- heads of people at the time. How did things look to them, when the
- new idea was only half-finished, and even the person who had it was
- only half-convinced it was right?But you don't have to stop at history. You can observe big new ideas
- being born all around you right now. Just look for a reasonable
- domain expert proposing something that sounds wrong.If you're nice, as well as wise, you won't merely resist attacking
- such people, but encourage them. Having new ideas is a lonely
- business. Only those who've tried it know how lonely. These people
- need your help. And if you help them, you'll probably learn something
- in the process.Notes[1]
- This domain expertise could be in another field. Indeed,
- such crossovers tend to be particularly promising.[2]
- I'm not claiming this principle extends much beyond math,
- engineering, and the hard sciences. In politics, for example,
- crazy-sounding ideas generally are as bad as they sound. Though
- arguably this is not an exception, because the people who propose
- them are not in fact domain experts; politicians are domain experts
- in political tactics, like how to get elected and how to get
- legislation passed, but not in the world that policy acts upon.
- Perhaps no one could be.[3]
- This sense of "paradigm" was defined by Thomas Kuhn in his
- Structure of Scientific Revolutions, but I also recommend his
- Copernican Revolution, where you can see him at work developing the
- idea.[4]
- This is one reason people with a touch of Asperger's may have
- an advantage in discovering new ideas. They're always flying on
- instruments.[5]
- Hall, Rupert. From Galileo to Newton. Collins, 1963. This
- book is particularly good at getting into contemporaries' heads.Thanks to Trevor Blackwell, Patrick Collison, Suhail Doshi, Daniel
- Gackle, Jessica Livingston, and Robert Morris for reading drafts of this.
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