Interesting post. I wonder, how are repeatable experiments possible in archaeology when the subject matter at hand involves unique factors in time that cannot possibly be reproduced ever again? And furthermore, the subjects of archaeology- the actors of history- would be fundamentally altered if subjected to laboratory type control. History cannot be bottled and put in a test tube. Of course, certain specific types of questions can be answered through repeated laboratory testing, and understanding of the historical subject matter can thus be enhanced.