Wisdom is more easily tweeted than internalized.

Saeid Fard

We produce 30-year projections of social security deficits and oil prices without realizing that we cannot even predict these for next summer --- our cumulative prediction errors for political and economic events are so monstrous that every time I look at the empirical record I have to pinch myself to verify that I am not dreaming. What is surprising is not the magnitude of our forecast errors, but absence of awareness of it.

Nassim Taleb

If you were smart enough to earn a Ph.D. in math, you should be able to learn how to program, once you overcome a possible psychological block. More important, let's make sure that our grad students are top-notch programmers, since very soon, being a good programmer will be a prerequisite to being a good mathematician.

-- Doron Zeilberger - (see also)

Many of us spontaneously anticipate how friends and colleagues will evaluate our choices; the quality and content of these anticipated judgments therefore matters. The expectation of intelligent gossip is a powerful motive for serious self-criticism, more powerful than New Year resolutions to improve one's decision making at work and at home.

Daniel Kahneman, Thinking, Fast and Slow

The right to search for truth implies also a duty; one must not conceal any part of what one has recognized to be true.

--Albert Einstein

Mandatory for science, generally advisable for anything else.

You can only become intellectually an adult, so to speak, if you break through domain dependence.

Nassim Taleb

Taleb runs an interesting Facebook, but if you don't want to get a Facebook account, I expect that a lot of this material will be in his upcoming book about anti-fragility (systems which get stronger when stressed).

I just realized that his domain dependence is equivalent to Rand's "concrete-bound mentality"-- in both cases, it's getting stuck on a single example rather than seeing general principles.

“It seems to me that often dumb people believe x, smart people believe y, really smart people believe x.”

-- Attributed to Gregory Cochran

On intellectual hipsters.

It's easy to just say, "They're crazy, who can explain crazy people?" and be done with it. It's easy to act like there's a separate species of people that naturally believes only wrong things, like dogs chasing squirrels, or rabbits digging holes.

It's harder to think that these are human beings who probably don't arbitrarily decide on a hobby of being wrong about things because it is fun, and that they're being driven by basic human qualities that we also have, like fear or ego. Or that they feel the need to make larger-than-life monsters and heroes out of real people (throwing away facts to do so) in order to make sense out of the confusing and painful situation our country has been going through (the economy, the release of the Ghost Rider sequel, etc.).

They're not good reasons, but they are reasons, beyond just "They're bad people, that's what bad people do."

Cracked, 4 Reasons Humans Will Never Understand Each Other

[A] single qubit that you understand is better than a thousand qubits that you don’t.

-- Scott Aaronson, in this blog post, reaching out to the pointy-haired bosses of the quantum computing world.

A poem about decision trees:

I think that I shall never see
A decision complex as that tree—

A tree with roots in ancient days
(At least as old as Reverend Bayes);

A tree with trunk all gnarled and twisted
With axioms by Savage listed;

A tree with branches sprouting branches
And nodes declaring what the chance is;

A tree with flowers in its tresses
(Each flower made of blooming guesses);

A tree with utiles at its tips
(Values gleaned from puzzled lips);

A tree with stems so deeply nested
Intuition’s completely bested;

A tree with branches in a tangle
Impenetrable from any angle;

A tree that tried to tell us “should”
Although its essence was but “would”;

A tree that did decision hold back
’Til calculation had it rolled back.

Decisions are reached by fools like me,
But it took a consultant to make that tree.

Michael Rothkopf

实事求是

"Seek truth from facts"

--Chinese saying

Civilization is a stream with banks. The stream is sometimes filled with blood from people killing, stealing, shouting and doing the things historians usually record, while on the banks, unnoticed, people build homes, make love, raise children, sing songs, write poetry and even whittle statues. The story of civilization is the story of what happened on the banks. Historians are pessimists because they ignore the banks for the river.

— Will Durant, Life, Oct. 18, 1963

To see what is in front of one's nose needs a constant struggle. One thing that helps toward it is to keep a diary, or, at any rate, to keep some kind of record of one's opinions about important events. Otherwise, when some particularly absurd belief is exploded by events, one may simply forget that one ever held it. Political predictions are usually wrong. But even when one makes a correct one, to discover why one was right can be very illuminating. In general, one is only right when either wish or fear coincides with reality. If one recognizes this, one cannot, of course, get rid of one's subjective feelings, but one can to some extent insulate them from one's thinking and make predictions cold-bloodedly, by the book of arithmetic. In private life most people are fairly realistic. When one is making out one's weekly budget, two and two invariably make four. Politics, on the other hand, is a sort of sub-atomic or non-Euclidean word where it is quite easy for the part to be greater than the whole or for two objects to be in the same place simultaneously. Hence the contradictions and absurdities I have chronicled above, all finally traceable to a secret belief that one's political opinions, unlike the weekly budget, will not have to be tested against solid reality.

George Orwell

He's mistaken about math and physics, possibly because he didn't expect his ideas on the subjects to be tested against solid reality....

All models are wrong. Some models are useful.

--George Box

Luck is opportunity plus preparation plus luck.

--Jane Espenson

Work with people who want to work with you and who are relatively sane.

Time and Robbery by Rebecca Ore

This quote hasn't gotten any karma yet-- it isn't funny, and it seems so obvious as to almost not be worth saying.

Still, I suspect that a lot of trouble is caused by ignoring that advice.

It is bad luck to be superstitious.

-Andrew W. Mathis

We want to stand upon our own feet and look fair and square at the world -- its good facts, its bad facts, its beauties, and its ugliness; see the world as it is and be not afraid of it. Conquer the world by intelligence and not merely by being slavishly subdued by the terror that comes from it. ... We ought to stand up and look the world frankly in the face. We ought to make the best we can of the world, and if it is not so good as we wish, after all it will still be better than what these others have made of it in all these ages. A good world needs knowledge, kindliness, and courage; it does not need a regretful hankering after the past or a fettering of the free intelligence by the words uttered long ago by ignorant men. It needs a fearless outlook and a free intelligence. It needs hope for the future, not looking back all the time toward a past that is dead, which we trust will be far surpassed by the future that our intelligence can create.

-Bertrand Russell

If we want to know if there has been a change from the start to the end dates, all we have to do is look! I’m tempted to add a dozen more exclamation points to that sentence, it is that important. We do not have to model what we can see. No statistical test is needed to say whether the data has changed. We can just look.

I have to stop, lest I become exasperated. We statisticians have pointed out this fact until we have all, one by one, turned blue in the face and passed out, the next statistician in line taking the place of his fallen comrade.

-William M. Briggs

It is the tragedy of the world that no one knows what he doesn't know - and the less a man knows, the more sure he is that he knows everything.

--Joyce Cary

Consider for a moment the first primitive amphibian that crawled up out of the sea around 400 million years ago. A contemporary biologist, had any existed, would certainly have classed this species as a rather unusual type of fish, for it would be far more closely related to certain kinds of fish than any other extant species. It is only in hindsight that we can see that it was not a fish, but the first representative of an entirely new class[41] of [vertebrates], the amphibians. But intelligence and tool-using are developments of comparable scope to the ability to breath air and move about on land. I therefore argue that human beings are not primates; we are not even mammals. Homo sapiens is a radical evolutionary phenomenon, the first representative of a new class of [vertebrates].

-- Ronald E. Merrill

(The brackets around "vertebrates" are just for a spelling correction.)

What enables the wise sovereign and the good general to strike and conquer, and achieve things beyond the reach of ordinary men, is foreknowledge. This foreknowledge cannot be elicited from spirits; it cannot be obtained inductively from experience, nor by any deductive calculation . . . the dispositions of the enemy are ascertainable through spies and spies alone.

-Sun Tzu, The Art of War
quoted from here in that particular form

Title should read: "Making Stuff Up Is Easy, Overcoming Cognitive Biases and Discovering How Things Really Work Is Difficult: An Exercise in the Obvious"

Reddit user sciencecomic, in response to a headline reading "'Why Religion Is Natural and Science Is Not'. Emory philosopher Robert McCauley suggests that science is more fragile than we think while religion more resilient – all for reasons coming back to humans' cognitive processes."

"...When I was still doubtful as to his [Wittgenstein's] ability, I asked G.E. Moore for his opinion. Moore replied, 'I think very well of him indeed.' When I enquired the reason for his opinion, he said it was because Wittgenstein was the only man who looked puzzled at his lectures."

--Bertrand Russell, pg 178 Last philosophical testament: 1943-68

There is one art, no more, no less: to do all things with artlessness.

-Piet Hein

Once the demands of acting - and hence deciding - in a time-pressured world are factored into our vision of rational thought, we get a model of the mind vastly unlike the model typically (and dimly) imagined by rationalists in the in the great tradition of Descartes, Leibniz and Kant.

Daniel Dennett, Elbow Room, (Control and Self-Control)

Any time you say something is "more likely" than something else, that an explanation is "improbable," or "almost certainly true," or "implausible," and so on, you are making mathematical statements. Any time something is "more" than something else, that's math.

-- Richard Carrier

Game theory won out over good wishes.

--Burning Man organizers

Methodologically speaking, we must be careful to prevent valid insights from degenerating into fantasies and superstition, and not develop the tendency to see an occult background everywhere and at all costs. In this regard, every assumption we make must have the character of what are called "working hypotheses" in scientific research - as when something is admitted provisionally, thus allowing the gathering and arranging of a group of apparently isolated facts, only to confer on them a character not of hypothesis but of truth when, at the end of a serious inductive effort, the data converge in validating the original assumption. Every time an effect outlasts and transcends its tangible causes, a suspicion should arise, and a positive or negative influence behind the stages should be perceived. A problem is posited, but in analyzing it and seeking its solution, prudence must be exercised. The fact that those who have ventured in this direction have not restrained their wild imaginations has discredited what could have been a science, the results of which could hardly be overestimated. This too meets the expectations of the hidden enemy.

Julius Evola, Occult War, on how to avoid "magic therefore Seventh Day Adventism" kinda errors when interpreting the paranormal.

When people talk about the importance of democracy, it is never democracy as it has ever actually functioned, with the politicians that have actually been elected, and the policies that have actually been implemented. It is always democracy as people imagine it will operate once they succeed in electing "the right people" — by which they mean, people who agree almost completely with their own views, and who are consistent and incorruptible in their implementation of the resulting policies.

--Ben O'Neill, here

Considering the above quote can be used to criticize nearly any popular political position I don't think it is inherently mind-killing. Also since we all agree democracy is a good thing this isn't even very political. The original article and context obviously does make it somewhat political.

Don't say you don't have enough time. You have exactly the same number of hours per day that were given to Helen Keller, Pasteur, Michaelangelo, Mother Teresa, Leonardo da Vinci, Thomas Jefferson, and Albert Einstein.

H. Jackson Brown

(The second-last paragraph of The Power of Agency by Lukeprog reminded me of it.)

Rationality promotion:

However, I would advise our readers to be good Bayesian thinkers and consider how easily tonight’s evidence fits in to the perspective they had on the race going into Tuesday evening.

-- Nate Silver, today's 538 blog

http://fivethirtyeight.blogs.nytimes.com/2012/02/08/g-o-p-race-has-hallmarks-of-prolonged-battle/

The original even linked to the wikipedia entry on "Bayesian".

It may be expecting too much to expect most intellectuals to have common sense, when their whole life is based on their being uncommon -- that is, saying things that are different from what everyone else is saying. There is only so much genuine originality in anyone. After that, being uncommon means indulging in pointless eccentricities or clever attempts to mock or shock.

--Thomas Sowell

Now you're looking for the secret. But you won't find it because, of course, you're not really looking. You don't really want to work it out. You want to be... fooled.

--John Cutter, The Prestige

The context in the movie is a bit different, but it's a nice illustration of how people can let themselves be seduced by mysterious answers to mysterious questions, even when they purport to be "looking for the answer."

Man gives indifferent names to one and the same thing from the difference of their own passions; as they that approve a private opinion call it opinion; but they that mislike it, heresy: and yet heresy signifies no more than private opinion.

--Thomas Hobbes, Leviathan

Words are wise men’s counters, they do but reckon by them; but they are the money of fools, that value them by the authority of an Aristotle, a Cicero, or a Thomas, or any other doctor whatsoever, if but a man.

--Thomas Hobbes, Leviathan

You are not the king of your brain. You are the creepy guy standing next to the king going "a most judicious choice, sire".

-- Steven Kaas

The strategy was really easy on the paper: no driver mistake, no pit stop mistake, no mechanic mistake, no engineer mistake ... it is so easy to write these things, but it is almost impossible to make it happen.

Dindo Capello, as quoted in Truth in 24 (2009 film).

The tendency toward generalization doesn’t bother me in an of itself, rather, I’m focused on whether the proposition is true. But the hypocrisy gets tiresome sometimes, as people will fluidly switch from a cognitive style which accepts generalization to one which rejects it. A stereotype is often a generalization whose robustness you don’t want to accept. Negative generalities need context when they’re unpalatable, but no qualification is necessary when their truth is congenial.

--Razib Khan, here

What makes a subject difficult to understand — if it is significant, important — is not that some special instruction about abstruse things is necessary to understand it. Rather it is the contrast between the understanding of the subject and what most people want to see. Because of this the very things that are most obvious can become the most difficult to understand. What has to be overcome is not difficulty of the intellect but of the will.

Ludwig Wittgenstein, Philosophical Occasions

I write only when inspiration strikes. Fortunately it strikes every morning at nine o'clock sharp.

-- W. Somerset Maugham

The world is a place
made of land and water
and even though it makes
sense in pictures
I do not understand it.

-a kid named Noah. (Hat-tip to Yvain.)

... Let us think about the future! Not only praise it, not only worship or shrink in terror from it, not only dream of it or fear it — let us think about it, invent it, prepare for it!..

— Arkady and Boris Strugatsky

Any time we find that “math” disagrees with reality, the problem is never with “math”—it’s with us, for using the wrong math!

Scott Aaronson

A good test for getting rid of anything is: if we didn't have this, would we need it? For example, let's say you have a ratty old armchair. You love your chair, you do. It was a new chair once and fine, it reclines, and you have spent many cool evenings ensconced in it, drinking Henry Weinhard's and munching Pringles, maybe indulging in a few controlled substances and watching Liquid TV (yes, the chair is that old). But many Pringles and not a little Henry's have made their ways into its funky blue fibers, which are not, in any way shape or form, washable. And frankly, with the new set from Pottery Barn - you're just not sure it goes. Here's one way to put the question. If you didn't have your chair, and you saw it sitting on the sidewalk somewhere, would you say: "Dude, someone's throwing out a perfectly good chair!" If so - definitely, keep it. If not... Of course, to make the analogy accurate, the chair would have to be 231 years old, so full of beer and chips it makes a sort of slosh-crunch noise when you sit on it, have a huge sharpened coil that's worked its way past the foam and stabs you in the ass on a regular basis, smell like a cross between a dead goat and an oil refinery, refuse to function at all without a staff of specialized chair administrators who must be onsite 24-7 and are extremely expensive and rude, and have expanded to fill the entire first floor of your house, with giant pseudopodia of ratty blue upholstery snaking out the windows and invading the neighbors' lawns.

Mencius Moldbug

This is why science and mathematics are so much fun; You discover things that seem impossible to be true, and then get to figure out why it's impossible for them NOT to be.

-Vi Hart, Doodling in Math: Spirals, Fibonacci, and Being a Plant- Part 3 of 3

There is no magical unreliability attaching to results just because they are results of single trials.

John Leslie, The End of the World, p. 242 (paperback)

(He is not talking about about trials in the "randomized controlled trial" sense but rather in the sampling sense.)

A half truth is more frightening than a lie.

-Bengali proverb

I’ve very often made mistakes in my physics by thinking the theory isn’t as good as it really is, thinking that there are lots of complications that are going to spoil it — an attitude that anything can happen, in spite of what you’re pretty sure should happen.

Richard Feynman, in Surely You're Joking, Mr. Feynman, chapter entitled "Mixing Paints".

"The truth is whatever you can get away with."

"No, that’s journalism. The truth is whatever you can’t escape."

-Greg Egan, Distress

The greatest deception men suffer is from their own opinions.

Leonardo da Vinci

Any logically coherent body of doctrine is sure to be in part painful and contrary to current prejudices

– Bertrand Russell, History of Western Philosophy p. 98

Bertie is a goldmine of rationality quotes.

I think if you do anything patiently people mistake it for being genius [...]

-- Nicholas Gurewitch (creator of Perry Bible Fellowship)

The human understanding is no dry light, but receives an infusion from the will and affections; whence proceed sciences which may be called "sciences as one would." For what a man had rather were true he more readily believes. Therefore he rejects difficult things from impatience of research; sober things, because they narrow hope; the deeper things of nature, from superstition; the light of experience, from arrogance and pride, lest his mind should seem to be occupied with things mean and transitory; things not commonly believed, out of deference to the opinion of the vulgar. Numberless, in short, are the ways, and sometimes imperceptible, in which the affections color and infect the understanding.

-- Francis Bacon, Novum Organum (Aphorism XLIX), 1620. (1863 translation by Spedding, Ellis and Heath. You should read the whole thing, it's all this good.)

Doctor Slithingly watched the readout on the computer screen and rubbed his hands together. ‘Excellent,’ he muttered, his voice a thin, rasping hiss. ‘Excellent!’ He laughed to himself in a chilling falsetto. ‘Soon my plan will come to fruition. Soon I will destroy them all!’ The room resounded with the sound of his insane giggling. This was the culmination of years of research – years of testing tissue samples and creating unnatural biological hybrids – but now it was over. Now, finally, he would destroy them all – every single type and variation of leukaemia. In doing so, he would render useless the work of thousands of charitable organisations as well as denying medical professionals the world over a source of income. He would prevent the publication of hundreds of inspiring stories of survival and sacrifice which might otherwise have sold millions of copies worldwide. ‘Bwahaha!’ he laughed. ‘So long, you meddling haematological neoplasm, you!’

Joel Stickley, How To Write Badly Well

Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway.

• Andrew Tanenbaum

A few from M:TG flavour text.

When nothing remains, everything is equally possible. ~One with Nothing

"Believe in the ideal, not the idol." -Serra ~Worship

"War glides on the simplest updrafts while peace struggles against hurricane winds. It is the way of the world. It must change." ~Commander Eesha

When learning, you must know how to make the clear distinction between what is ideology and what is genuine knowledge.

There is no such thing as good and evil. There is what is right and what is bad, what is consistent and what is wrong.

-- "Behaviour Guide (in order to avoid mere survival)", Jean Touitou