Statements typically place a person in a location at a certain point in time, express a relationship between two people, or state a specific event.
Genealogists should decide the perceived accuracy of any given statement based upon the document from which it comes and the likely informant and then go from there.
I don't get too many responses here, but I'm hoping to continue to define the research process the way I actually do it. I'm not certain that models I've seen really hit at how I research.