There are times when it seems that an ancestor must have been dropped to Earth (or swept away therefrom) by aliens. No matter how hard you try, no matter how many records you search, nothing provides you with explicit information (direct evidence) on that ancestor’s parents, or what became of his children, etc. But even in the absence of such direct evidence, it is possible to arrive at valid conclusions using indirect evidence and negative evidence. This class will be a combined lecture and workshop about the thought processes and methods used to arrive at a genealogical conclusion in the absence of direct evidence. Included will be: