Hello,
We’re not being asked to believe in just the existence of an undocumented large mammal species. A new deer/bovid species in Congo or Laos is noteworthy but not jaw dropping. It’s a ~500lb ape/hominid, that’s bipedal, that lives in the North America close to very large urban centers not in the remote Congo, that’s nocturnal (no known nocturnal apes), that has not been shot or a body found in 400 years or so of European settlement, that has not been clearly documented on trail cameras despite their widespread use (hunters, biologists, people who just want to see what’s there), that is not in the fossil record, that (presumably) exists in very low population densities when there should be a lot of them (no more grizzly bears to compete with in the lower 48) and therefore obvious that they’re around etc. There’s probably a few more I’m missing that people on the list can add. For me, it’s a compounding probability thing. The odds of flipping heads with a coin is 50%. The odds of flipping heads twice in a row is 25% (0.5 x 0.5) and so on. So all of these improbabilities compound making it nigh near impossible for the existence of bigfoot. I do understand that for people that believe in it, the probability of all of the footprints being fakes and mistakes compounded with the probability that all of the sightings are fakes and mistakes makes it nigh near impossible for a bigfoot not to exist, but for me it doesn’t (not even close). Like most people on this list, nothing would make me happier than a real live bigfoot population but there just isn’t any evidence for it.