And then I thought that when we do risk analysis with stastics and advanced mathematic model, we are able to figure out all the possibilities precisely, though which  the past may explain the future. However, the past can never present the future with uncertainties, which is the most frighten things for us human beings.

I always worried about the uncetainties as well, even if it brings me so many opportunities and benefits. Then if it is something unpredictable, just let it go...