The Implications Of These Considerations Justify The

Theory Not Only Formulates What We Know But Also Tells Us What We Want To Know, That Is, The Questions To Which An Answer Is Needed.

It Is Probably Safe To Say That All The Changes Of Factual Knowledge Which Have Led To The Relativity Theory, Resulting In A Very Great Theoretical Development, Are Completely Trivial From Any Point Of View Except Their Relevance To The Structure Of A Theoretical System.

Special Emphasis Should Be Laid On This Intimate Interrelation Of General Statements About Empirical Fact With The Logical Elements And Structure Of Theoretical Systems.

The Importance Of Certain Problems Concerning The Facts Will Be Inherent In The Structure Of The System.

But The Scientific Importance Of A Change In Knowledge Of Fact Consists Precisely In J Its Having Consequences For A System Of Theory.