Relevance is important because information is specific to its frame of reference. On the surface it may appear that information freely crosses the borders of disciplines. It does not. That is to say, an expert in one discipline may be a misinformed amateur in another. Time in one discipline is measured in millions of years and in another in nano-seconds.
Numbers used by economists have entirely different meanings from numbers used by nuclear physicists.
Explanations of how things work in one frame provide only remotely limited analogies as to how other things work. Logic and justice have entirely different meanings in philosophy and law. Comparing an engine's fuel pump to a human heart distorts the truth behind both objects. As a consequence, problem solvers must be confident that they frame their problems in frames that are relevant and provide valid and reliable information. Sources of Information.