When I see a bird that walks like a duck and swims like a duck and quacks like a duck I call that bird a duck.
If it looks like a duck and quacks like a duck we have at least to consider the possibility that we have a small aquatic bird of the family anatidae on our hands.
I remember being in Hollywood at the age of 16 and marveling at the stars. The idea of being part of it never entered my mind. It was too far-fetched.