def use_original_date(original_date, release_date):
    """Return True if the original date should be used in tags."""
    if original_date is None:
        return False
    if release_date is None:
        return True
    original_year = original_date[:4]
    release_year = release_date[:4]
    if original_year == release_year:
        return False
    return True
