There are relationships between all things. Describing the abstract elements of those relationships is philosophy.

Science acquires information through measurements. Journalists acquire information which is borrowed through access from other persons who already have it. Philosophy acquires information through observation.

To describe information which is acquired through observation, terminology must be used which allows others to observe the described information. Rudimentary observations are used. Often analogies reduce observations to simple forms. Christ used allegories to provide complex abstractions to common persons.

All relationships are abstract. That means nonperceivable. To get observable realities out of nonperceivable relationships, cause-and-effect influences are described. Newton's laws are described in terms of the results that invisible influences create, such as, a force is that which accelerates a mass. The force cannot be seen, but what it does can be. The result can then be measured.

In this way, philosophy can be tested. The result of philosophy translates into observable effects. But outside science, the results are not quite measureable; they can be observed as influences over perceivable realities. Social forces are seen as results that people produce.

Since philosophy doesn't measure or borrow, the observations are expected to be made by the listeners. It means, philosophy is a contention which is expected to be verified by others.

For this reason, there is a vast difference between philosophy that is correct and erroneous claims which are not. Correct philosophy will be found to be true when tested. And there is a requirement for philosophy to be clear and obvious, so it can be easily determined to be true.

The truth of philosophy should be readily apparent in normal observations. The demand is to find methods of explanation which show readily-apparent effects.

Philosophy is then a source of truth. The more basic the subject matter the more unquestionable the truth is, because basic means more realities show the relationships.

Obviously, philosophy is unheard of in the corrupt world disconnected from reality. Corrupters say, seeing is believing. They have nothing to believe in but their perception. Perception does not provide interpretation without abstract realities which must be evaluated for relationships between realities.

Corrupters have no way of evaluating what they perceive, because they cannot determine relationships between realities. Therefore, they contrive relationships between realities (as meaning) for their purposes which are always corrupt.