History must not only be studied, but continually re-studied and re-surfaced. We have all seen how easy it is for something "obvious" to become memory-holed even in as short a time as the last five years. How much easier when the primary sources were shaky to begin with and the myth-makers have a social and political agenda that they may not be entirely conscious of themselves. How easy it is to re-write history "as it should have been" (a phrase that has always grated on me in the context of the Society for Creative Anachronism, regardless of the direction of one's "should").