But anti-belief is scientific if the belief for something requires a complete overturning of scientific principles. It's not just an absence of evidence for something. It isn't "open minded" to say "could be..." to Bigfoot, Nessie, or the like -- it's closed minded because to even consider the idea seriously is to think that ecologists and population geneticists have no idea what the minimum habitat of a large animal is or of the minimum viable population size is.