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But the scientific importance of a change in knowledge of fact consists precisely in j its having consequences for a system of theory.

We must break problems down into small, digestible bits. We must define the concepts that we use and explain what components they consist of. We must tackle small problems.

How you define a problem shapes how you address it.

It is that of increasing knowledge of empirical fact, intimately combined with changing interpretations of this body of fact - hence changing general statements about it - and, not least, a changing a structure of the theoretical system.

Empirical interest will be in the facts so far as they are relevant to the solution of these problems.

From all this it follows what the general character of the problem of the development of a body of scientific knowledge is, in so far as it depends on elements internal to science itself.

Special emphasis should be laid on this intimate interrelation of general statements about empirical fact with the logical elements and structure of theoretical systems.

To solve a problem it is necessary to think. It is necessary to think even to decide what facts to collect.

Systems are to be appreciated by their general effects, and not by particular exceptions.

The chief cause of problems is solutions.