[see Chronological snobbery, modern is best]
This means to assume that something is better just because it is newer. It could manifest by dismissing traditional advice on dating, or automatically not considering ancient philosophies but favouring more modern ideas for the sake of it. But the right idea is the right idea, regardless of when or where it comes from.
OLD IS OK
NEW ISN’T BEST
RIGHT IS RIGHT
ITS NOT WHEN OR WHERE BUT IF