As stated earlier, there are no right or wrong answers to questions of the mind, when the mind is purely subjective and unique to every individual. To explain all of these levels with just one paradigm would be limiting. This explains the need for many different paradigms and a dialectical approach, allowing psychology to see human phenomena from many different angles, analogous to viewing a Necker cube. Another way of thinking about this issue would be to compare psychology to music. In some respects, various paradigms in psychology can be compared to the different forms of music.
All forms add something to the discipline, or art, of music.
To think of musical forms separately is limiting. For example, if a classical musician was to say that all forms of music outside of classical are worthless, the notion would be thought of as ridiculous, because classical music does not satisfy everyone's musical needs at all times. While this may seem like a philosophical argument, it is actually more of a statement about people. There is no one simple answer or law explaining people and their actions. Therefore, it is important to allow many different perspectives into the realm of psychology to form a better understanding, a more integrated, and complete knowledge.