 Furthermore, it is impossible to add a true consequence to a false theory without thereby adding additional false consequences (or subtract a false consequence without subtracting true consequences). So the account entails that no false theory is closer to the truth than any other. We could call this result the relative worthlessness of all falsehoods. These worthlessness results were proved independently by Pavel Tichý and David Miller (Miller 1974, and Tichý 1974) – for a proof, see the supplement  on Why Popper’s definition of truthlikeness fails: the Tichý-Miller theorem.