Young Earth Creationism goes completely against conventional geochronology. This kind of creationism says God created the earth roughly 6,000 or 10,000 years ago as told in Genesis. Young Earth Creationists believe that God created the world in six days (with God resting on the seventh) as the Book of Genesis says. Young Earth Creationism says that Noah's flood is important to creationism. They argue that "the first buried fossils of each group are complete and complex (complicated), strong support for the biblical concept (idea) that each kind of life was created well designed to multiply after its own kind." They believe that the Bible is literally true (see Biblical inerrancy). Some people say a problem with this is that fossils appear in layers called strata. 