Nelson Goodman formulated a similar notion in "Fact, Fiction and Forecast" (1956). "We have come to think of the actual as one among many possible worlds. We need to repaint that picture. All possible worlds lie within the actual one", Goodman wrote. Putnam rejected this form of social constructivism, but retained the idea that there can be many correct descriptions of reality. None of these descriptions can be scientifically proven to be the "one, true" description of the world. For Putnam, this does not imply relativism, because not all descriptions are equally correct and correctness is not determined subjectively.