Edited sentence: Young Earth creationists respond by pointing out that since evolution cannot explain the origin of life without which it cannot occur, and because there are no known mutations which have resulted in an information increase in the genome (See Lee Spetner, Not By Chance [Judaica Press, 1996]), and that evolutionists excuse this lack of empirical evidence by appealing to the need for long periods of time, then evolution is also unrepeatable, unfalsifiable and untestable, and therefore, by its very nature, is completely unscientific