Under a "sweat of the brow" doctrine, the creator of a work, even if it is completely unoriginal, is entitled to have that effort and expense protected; no one else may use such a work without permission, but must instead recreate the work by independent research or effort. The classic example is a telephone directory. In a "sweat of the brow" jurisdiction, such a directory may not be copied, but instead a competitor must independently collect the information to issue a competing directory. The same rule generally applies to databases and lists of facts.