One thing that genealogists need to do is to always cite their sources. I well remember my early days of family tree searches. I would record new information into three-ring notebooks. (This was long before the invention of the personal computer.) I would write down names, dates, places, and perhaps a bit more information that I was lucky enough to find.
Unfortunately, in those early days I did not write down where I obtained the information. Nobody told me that I needed to do this, and I wasn’t smart enough to figure it out for myself. I simply assumed that everything I found was accurate. After all, it was printed in a book, wasn’t it?
As time passed, I frequently found new information that contradicted what I found earlier. When I discovered these discrepancies, I needed to determine which piece of information was more accurate. The question that arose time and again was, “Where did I find that information?” Sadly, I often did not know.