Science is a way to not fool ourselves.
Carl SaganRead
[N]o scientist likes to be criticized. ... But you don't reply to critics: "Wait a minute, wait a minute; this is a really good idea. I'm very fond of it. It's done you no harm. Please don't attack it." That's not the way it goes. The hard but just rule is that if the ideas don't work, you must throw them away. Don't waste any neurons on what doesn't work. Devote those neurons to new ideas that better explain the data. Valid criticism is doing you a favor.
Interpretation
Criticism of ideas is necessary for scientific progress, and one must learn to discard ineffective ideas in favor of better ones.
In this quote, Carl Sagan emphasizes the importance of accepting criticism in the realm of science. He points out that when an idea fails to hold up, it is essential to let go of that idea and focus energy on developing new ideas that can provide better explanations for data. Embracing valid criticism should be seen as a constructive act that aids in the advancement of knowledge rather than a personal affront.
In practice
In a scientific conference where new theories are being presented.
Science is a way to not fool ourselves.
In more than one respect, the exploring of the Solar System and homesteading other worlds constitutes the beginning, much more than the end, of history.
How smart does a chimpanzee have to be before killing him constitutes murder?
The hole in the ozone layer is a kind of skywriting. At first it seemed to spell out our continuing complacency before a witch's brew of deadly perils. But perhaps it really tells of a newfound talent to work together to protect the global environment.
There is a reward structure in science that is very interesting: Our highest honors go to those who disprove the findings of the most revered among us. So Einstein is revered not just because he made so many fundamental contributions to science, but because he found an imperfection in the fundamental contribution of Isaac Newton.
The simplest thought, like the concept of the number one, has an elaborate logical underpinning.
We know more about the movement of celestial bodies than about the soil underfoot.
Good science is done by being curious in general, by asking questions all around, by acknowledging the likelihood of being wrong and taking this in good humor for granted, by having a deep fondness for nature, and by being made jumpy and nervous by ignorance.
No barrier stands between the material world of science and the sensibilities of the hunter and the poet.
The brightest flashes in the world of thought are incomplete until they have been proven to have their counterparts in the world of fact.
It is interesting thus to follow the intellectual truths of analysis in the phenomena of nature. This correspondence, of which the system of the world will offer us numerous examples, makes one of the greatest charms attached to mathematical speculations.
A strong intuition is much more powerful than a weal test. Normals teach us rules; outliers teach us laws. For every perfect medical experiment, there is a perfect human bias.
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