电话簿作为一种编辑作品似乎自问世时即受到法律的保护。美国 1 90 9年版权法明确将编辑作品纳入了版权的保护客体范围。那么 ,完全由事实汇编而成的作品其独创性何在 ?法律为何要保护这类作品 ?在解释法律为何要保护电话簿这类编辑作品时 ,美国联邦法院发明了所谓的“汗水原则 It appears that the phone book, as an editorial, is protected by law as soon as it comes out. The United States Copyright Act 1990 has explicitly incorporated editorial work into the protection of copyright objects. So what is the originality of works entirely composed of facts and why the law protects such works? In explaining why law protect edits such as telephone directories, the U.S. federal courts have invented the so-called "sweat principle