def dominate(s1, s2):
    """ Returns true if S1 dominates S2. S1 dominates S2 if S1 is better
    (it our case lower) in the two fitness functions """
    score1 = s1.get_fitness_score()
    score2 = s2.get_fitness_score()
    return False if (score1[0] > score2[0] or score1[1] > score2[1] or
                     (score1[0] == score2[0] and score1[1] == score2[1])) else True