Probably the most famous day-age creationist was American politician, anti-evolution campaigner and Scopes Trial prosecutor William Jennings Bryan. Unlike many of his conservative followers, Bryan was not a strict biblical literalist, and had no objection to "evolution before man but for the fact that a concession as to the truth of evolution up to man furnishes our opponents with an argument which they are quick to use, namely, if evolution accounts for all the species up to man, does it not raise a presumption in behalf of evolution to include man?" He considered defining the days in Genesis 1 to be twenty-four hours to be a pro-evolution straw man argument to make attacking creationists easier, and admitted at Scopes that the world was far older than six thousand years, and that the days of creation were probably longer than twenty-four hours each.[4]