Empty thoughts

So since human creativity depend on things that created  already (a human brain cant make up new creatures we just combine what we see or overcreate what we found) that means everything we know depends on real creatures like dragons actually 4 footed (foot already created) winged (wing already created) and that fire breath maybe old people believed devil was something like dragon? And there is more i wonder where that unicorn horn came from since there is any creature able to do magic (or maybe we believed a lot of things was magic) or we thought horned animals magician or something? I just wonder….