A gloss is a total system of perception and language.

The hypothesis may be put forward, to be tested by the s subsequent investigation, that this development has been in large part a matter of the reciprocal interaction of new factual insights and knowledge on the one hand with changes in the theoretical system on the other.

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

The implications of these considerations justify the statement that all empirically verifiable knowledge even the commonsense knowledge of everyday life - involves implicitly, if not explicitly, systematic theory in this sense.

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

The importance of certain problems concerning the facts will be inherent in the structure of the system.

But the fact a person denies that he is theorising is no reason for taking him at his word and failing to investigate what implicit theory is involved in his statements.