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This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, articles and should mainly contain subcategories.
A theory provides an explanatory framework for some observation, and from the assumptions of the explanation follows a number of possible hypotheses that can be tested in order to provide support for, or challenge, the theory.
This category has the following 9 subcategories, out of 9 total.
The following 49 pages are in this category, out of 49 total. This list may not reflect recent changes (learn more).