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A theory that seems to explain everything is just as good at explaining nothing.

 

Christopher Hitchens

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Of all obstacles to a thoroughly penetrating account of existence, none looms up more dismayingly than “time.” Explain time? Not without explaining existence. Explain existence? Not without explaining time. To uncover the deep and hidden connection between time and existence, to close on itself our quartet of questions, is a task for the future.

 

John Archibald Wheeler

 

There is one feature I notice that is generally missing in "cargo cult science." It's a kind of scientific integrity, a principle of scientific thought that corresponds to a kind of utter honesty — a kind of leaning over backwards. For example, if you're doing an experiment, you should report everything that you think might make it invalid — not only what you think is right about it; other causes that could possibly explain your results; and things you thought of that you've eliminated by some other experiment, and how they worked — to make sure the other fellow can tell they have been eliminated.
Details that could throw doubt on your interpretation must be given, if you know them. You must do the best you can — if you know anything at all wrong, or possibly wrong — to explain it. If you make a theory, for example, and advertise it, or put it out, then you must also put down all the facts that disagree with it, as well as those that agree with it. There is also a more subtle problem. When you have put a lot of ideas together to make an elaborate theory, you want to make sure, when explaining what it fits, that those things it fits are not just the things that gave you the idea for the theory; but that the finished theory makes something else come out right, in addition.
In summary, the idea is to try to give all of the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.

 

Richard Feynman

 

A theory that you can't explain to a bartender is probably no damn good.

 

Ernest Rutherford

 

If I tried to explain, you could never understand;
Explaining would only make a worse misunderstanding...

 

Thomas Stearns (T. S.) Eliot

 

And Coleridge, too, has lately taken wing,
But, like a hawk encumber'd with his hood,
Explaining metaphysics to the nation –
I wish he would explain his Explanation.

 

Samuel Taylor Coleridge