Isn't the future a variable, unknown and changeable? Why do predictions exist?

There is no change in the future. Unpredictable (except political weather)

No one can answer the question whether the future can change. .

And the existence of prophecy only enriches our lives. Living in fear makes people cherish every minute. . . It can be said that no prophecy is 100%, let alone Mayan prophecy. . There are too many loopholes in this prediction.