is something has a positive impact on something else, then the opposite of that something will have a negative impact on that something else
sometimes_change is not good_thing. sometimes_change is good_thing. opposites is two_things. negativity is polarity. change is when_one_thing_becomes_another_thing. positive_and_negative is opposites. positive_and_negative is not opposites. change is not when_one_thing_becomes_another_thing. all_things has impact_on_other_things negativity is not polarity.