Nobody knows exactly what a UFO and Bigfoot really look like so that helps. The debate is not so much about whether the footage has been doctored but rather about what it depicts.
A better example would probably be the moon landing footage or 9/11. And then it's really only questioned by conspiracy theorists and specifically because a state actor might have wanted to hide the evidence of a conspiracy.
Tomorrow with this new technology I might not convince you that Bigfoot exists but I might be able to show you extremely convincing footage of Margaret Thatcher and Mao Zedong frolicking in the Swiss Alps while Tupac is watching.
A better example would probably be the moon landing footage or 9/11. And then it's really only questioned by conspiracy theorists and specifically because a state actor might have wanted to hide the evidence of a conspiracy.
Tomorrow with this new technology I might not convince you that Bigfoot exists but I might be able to show you extremely convincing footage of Margaret Thatcher and Mao Zedong frolicking in the Swiss Alps while Tupac is watching.