Thats actually a different theory then what I learned. The yin and yang sign above is actually 2 coy fish swimming around each other. Without one coy fish there isn't the other to complete the circle of good and bad. Good and bad are equal partners. Without bad we don't have good in life. Without good we don't have bad in life. So they both have equal importance that create the good and bad we face every day. So basically no such thing as good or bad could ever happen without the relation to one another. So they have equal importance. We can find the good in anything bad and find the bad in anything good. The key is learning from this circle of life whether it a good or bad situation and to respect both equally.