No. It's built on the totality of the evidence. That's something you cannot seem to understand.
[James Earl Jones voice]: Morton's Demon is strong in this one. [breathing sounds]
Does a scientist really evaluate evidence with a pre-disposed opinion? It can't be what it looks like it may be (just a big bird) ..... so it has to be a dinosaur with 4 legs that walks on the back two, with birdlike characteristics, that swims out to sea to feed on fish and carrion. How could I not think of that myself????? Why... it's as plain as the nose on one's face.