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In theory there is no difference between theory and practice. In practice there is.
In theory there is no difference between theory and practice. In practice there is.
A theory is no more like a fact than a photograph is like a person.
A theory is no more like a fact than a photograph is like a person.
Many things difficult to design prove easy to performance.
Many things difficult to design prove easy to performance.
A theory has only the alternative of being right or wrong. A model has a third possibility - it may read more
A theory has only the alternative of being right or wrong. A model has a third possibility - it may be right but irrelevant.
Science is organized common sense where many a beautiful theory was killed by an ugly fact.
Science is organized common sense where many a beautiful theory was killed by an ugly fact.
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never read more
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.
You have to know you can first. How comes later.
You have to know you can first. How comes later.
How empty is theory in the presence of fact
How empty is theory in the presence of fact
[Do not] put too much confidence in experimental results until they have been confirmed by theory.
[Do not] put too much confidence in experimental results until they have been confirmed by theory.