The sea route west to Cathay. It is not known when the idea originated of sailing westward in order to reach Cathay.
The answer is representativeness heuristic. This heuristic
play a part in the valuations we make about other people. In the representativeness
heuristic, the likelihood that Anna is a librarian, for instance, is
measured by the mark to which his is representative of, or like
to, the typecast of a librarian.