1) You don't need a single theory to fit all the evidence — some sightings might be unrelated to others. 2) You don't need a theory to fit all the evidence sin

1) You don't need a single theory to fit all the evidence — some sightings might be unrelated to others. 2) You don't need a theory to fit all the evidence since, undoubtedly, not all the evidence is accurate. A theory that fit most of the evidence is adequate. 3) We all know people and even photos lie. That gives us quite a bit of leeway to be dismissive of sightings and official responses as well.