Primary Laws of Archaeology

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The three laws of Archaeology consist of:

Law of horizontality

Law of association

Law of superposition

If choosing between two interpretations, one given by the Law of Association and one given by stratigraphy (Law of Superposition and Law of Horizontality), one should always place the greater reliance on the interpretation developed by the stratigraphy, given that the stratigraphy can be shown to have strong integrity (without disturbance). This can by tricky, as you can't ever know for sure that the stratigraphy hasn't been disturbed. But neither can you know that something wasn't added to the assemblage you are trying to associate at a later date. The signs of disturbance, however, can be read finer by a trained archaeologist for stratigraphy than for a collection, and therefore more original data can be gathered.

The Law of Association is only a method for creating a hypothesis about the meaning of an assemblage. It can be a plausible hypothesis, but there it ends. Stratigraphy is a testable method for interpreting the plausible hypothesis created by using the Law of Association. In such, the Law of Association is best used when one has the stratigraphy to test any developed hypothesis against. Without that stratigraphy, the association can answer no questions, due to its speculative and untestable nature. Yes, if you only have the assemblage itself taken out of context, then there are data one can extrapolate by using the Law of Association. This is basically what JAA Worsaae did to test the 3 Age system. The data he gathered was qualitative in nature, but it solidified a basic concept in archaeology, which is that artifacts in an assemblage do have a relationship to each other. But he did not use the Law of Association alone to test the 3 Age system. He also used the idea of seriation, that similar objects in multiple collections can be regarded as actually similar in function or technological creation.