Es peligroso y temerario que el ciudadano medio mantenga su ignorancia sobre el calentamiento global, la reducción del ozono, la contaminación del aire, los residuos tóxicos y radiactivos, la lluvia ácida, la erosión del suelo, la deforestación tropical, el crecimiento exponencial de la población.

I don’t know to what extent ignorance of science and mathematics contributed to the decline of ancient Athens, but I know that the consequences of scientific illiteracy are far more dangerous in our time than in any that has come before. It’s perilous and foolhardy for the average citizen to remain ignorant about global warming, say, or ozone depletion, air pollution, toxic and radioactive wastes, acid rain, topsoil erosion, tropical deforestation, exponential population growth. Jobs and wages depend on science and technology. If our nation can’t manufacture, at high quality and low price, products people want to buy, then industries will continue to drift away and transfer a little more prosperity to other parts of the world. Consider the social ramifications of fission and fusion power, supercomputers, data “highways,” abortion, radon, massive reductions in strategic weapons, addiction, government eavesdropping on the lives of its citizens, high-resolution TV, airline and airport safety, fetal tissue transplants, health costs, food additives, drugs to ameliorate mania or depression or schizophrenia, animal rights, superconductivity, morning-after pills, alleged hereditary antisocial predispositions, space stations, going to Mars, finding cures for AIDS and cancer.

Yet like many other human traits that made sense in past ages but cause trouble in the modern age, the knowledge illusion has its downside. The world is becoming ever more complex, and people fail to realise just how ignorant they are of what’s going on. Consequently some who know next to nothing about meteorology or biology nevertheless propose policies regarding climate change and genetically modified crops, while others hold extremely strong views about what should be done in Iraq or Ukraine without being able to locate these countries on a map. People rarely appreciate their ignorance, because they lock themselves inside an echo chamber of like-minded friends and self-confirming newsfeeds, where their beliefs are constantly reinforced and seldom challenged.
Providing people with more and better information is unlikely to improve matters. Scientists hope to dispel wrong views by better science education, and pundits hope to sway public opinion on issues such as Obamacare or global warming by presenting the public with accurate facts and expert reports. Such hopes are grounded in a misunderstanding of how humans actually think. Most of our views are shaped by communal groupthink rather than individual rationality, and we hold on to these views out of group loyalty. Bombarding people with facts and exposing their individual ignorance is likely to backfire. Most people don’t like too many facts, and they certainly don’t like to feel stupid. Don’t be so sure that you can convince Tea Party supporters of the truth of global warming by presenting them with sheets of statistical data.

I am very worried that most Americans are close to total ignorance about the world. They are ignorant. That is an unhealthy condition in a country in which foreign policy has to be endorsed by the people if it is to be pursued. And it makes it much more difficult for any president to pursue an intelligent policy that does justice to the complexity of the world.

The world contains far more information than any single person can learn in their lifetime.

The question is not whether you are ignorant, but what you choose to be ignorant about.

Few topics are worth your precious time. Choose what you pay attention to with great care.

the consequences of scientific illiteracy are far more dangerous in our time than in any that has come before. It’s perilous and foolhardy for the average citizen to remain ignorant about global warming, say, or ozone depletion, air pollution, toxic and radioactive wastes, acid rain, topsoil erosion, tropical deforestation, exponential population growth. Jobs and wages depend on science and technology. If our nation can’t manufacture, at high quality and low price, products people want to buy, then industries will continue to drift away and transfer a little more prosperity to other parts of the world. Consider the social ramifications of fission and fusion power, supercomputers, data “highways,” abortion, radon, massive reductions in strategic weapons, addiction, government eavesdropping on the lives of its citizens, high-resolution TV, airline and airport safety, fetal tissue transplants, health costs, food additives, drugs to ameliorate mania or depression or schizophrenia, animal rights, superconductivity, morning-after pills, alleged hereditary antisocial predispositions, space stations, going to Mars, finding cures for AIDS and cancer. How can we affect national policy — or even make intelligent decisions in our own lives — if we don’t grasp the underlying issues?

where ignorance is bliss, ‘tis folly to be wise.

The general biological ignorance bodes ill for democratic decisions on environmental issues.

The need for general scientific understanding by the public has never been larger, and the penalty for scientific illiteracy never harsher… Lack of scientific fundamentals causes people to make foolish decisions about issues such as the toxicity of chemicals, the efficacy of medicines, the changes in the global climate.

My ignorance wasn’t just annoying. It was dangerous.

Evil is relatively rare; ignorance is epidemic.

If I had to name the single most frightening and dangerous threat to the health of the oceans, the one that stands alone yet is at the base of all the others is ignorance: lack of understanding, a failure to relate our destiny to that of the sea, or to make the connection between the health of coral reefs and our own health, between the fate of the great whales and the future of humankind. There is much to learn before it is possible to intelligently create a harmonious, viable place for ourselves on the planet. The best place to begin is by recognizing the magnitude of our ignorance, and not destroy species and natural systems that we cannot re-create nor effectively restore once they are gone.

Have the courage to be ignorant of a great number of things, in order to avoid the calamity of being ignorant of everything.

Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity.