"Most researchers who study the bigfoot subject will point to the abundance of witnesses as the factor they found most compelling about the mystery when first becoming acquainted with it. Over the course of time, bigfoot researchers meet enough eyewitnesses to realize there are indeed many, many eyewitness across the continent who are indeed very credible. Often there are multiple witnesses to a given sighting or encounter.
"There are, in fact, way too many eyewitnesses for this phenomenon to be purely imaginary, as skeptics assert. With such an abundance of eyewitnesses, who are so dispersed across the continent, and dispersed across the decades, the alternate skeptical explanation that the sightings are the result of hoaxers, in whole or even in large part, becomes much less likely.
"Researchers eventually come to realize that if there are indeed so many credible eyewitnesses across the land, then the species they so consistently and emphatically describe probably exists also."
Content courtesy of the BFRO.