Can you do something "
again" if that something is
not the same? To do something "
again" means that part of what is being done is the same.
Can one "
search again" as in "
research" as in doing it "
again" for the "
first time"? How about "
research" it "
from the beginning"?
The famous line remembered from the movie Casablanca is "
Play it again, Sam". That line is never said. Bergman says, "
Play it once, Sam, for old times sake". When Sam does nothing, she says "
Play it, Sam! Play 'As time goes by'.".
Bergman said, essentially, "
play it from the beginning". It is not uncommon to remember or think "
play it again" when that was not actually said.