A Quote by John McCarthy

Never abandon a theory that explains something until you have a theory that explains more. — © John McCarthy
Never abandon a theory that explains something until you have a theory that explains more.
A theory that explains everything, explains nothing
In order to displace a prevailing theory or paradigm in science, it is not enough to merely point out what it cannot explain; you have to offer a new theory that explains more data, and do so in a testable way.
I just thought of a great theory that explains everything. When I went to that party, I was abducted by aliens. They have created a fake Earth and fake high school to study me and my reactions. This certainly explains cafeteria food.
The oldest theory of art belongs to the Greeks, who regarded art as an imitation (mimesis) of reality. The strength of that theory is that it explains the way in which art takes its materials from real life.
One of the most exciting things about dark energy is that it seems to live at the very nexus of two of our most successful theories of physics: quantum mechanics, which explains the physics of the small, and Einstein's Theory of General Relativity, which explains the physics of the large, including gravity.
To me this is the most beautiful, the most satisfactory from a scientific standpoint, the most logical theory of life. For thirty years I have leaned toward the theory of Reincarnation. It seems a most reasonable philosophy and explains many things.
A good theory explains a lot but postulates little.
Garden design theory explains, or should explain, the 'What, Where, Why and How' of making gardens.
The theory of evolution explains to us what our ancestry has been. It does not explain away our worth. Why should we be afraid to learn more about what we are?
When we meet a fact which contradicts a prevailing theory, we must accept the fact and abandon the theory, even when the theory is supported by great names and generally accepted.
The theory of the earth is the science which describes and explains changes that the terrestrial globe has undergone from its beginning until today, and which allows the prediction of those it shall undergo in the future. The only way to understand these changes and their causes is to study the present-day state of the globe in order to gradually reconstruct its earlier stages, and to develop probable hypotheses on its future state. Therefore, the present state of the earth is the only solid base on which the theory can rely.
The monopoly of science in the realm of knowledge explains why evolutionary biologists do not find it meaningful to address the question whether the Darwinian theory is true.
If the theory accurately predicts what they [scientists] see, it confirms that it's a good theory. If they see something that the theory didn't lead them to believe, that's what Thomas Kuhn calls an anomaly. The anomaly requires a revised theory - and you just keep going through the cycle, making a better theory.
Psychology, which explains everything, Explains nothing, And we are still in doubt.
Psychology which explains everything explains nothing, and we are still in doubt.
The main thing to understand about the current state of physics is that we have - are in some sense, a kind of victim of our own success. We have an incredibly successful theory called the Standard Model. And it really explains everything that we can observe about and in terms of a very small number of elementary particles and some basic forces between them. And it's a quite beautiful theory and it really is just absurdly successful.
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