Predestination and altering the future - Can your future gomanyways or only1 way!

I am confused about predestiny. I am not here to hear chatter about just do the right thing and don't worry about destiny.

I want to know if someone saw your future is it possible for that future to go differently then what that person saw?

We know from the Gita that Krishna is the knower of the past, the present and the future. Consequently He is certainly aware of any of our future actions. Then again, He is beyond time and not bound by time, and consequently by His mere desire time can be altered. Thus there are infinite possible timelines awaiting us, based on His sweet will.

Aside that, karma gives you the framework in which you can excercise your power of will. It does not predetermine your choices, though it influences them to a very great degree, a degree which seems almost predetermined.

So yes, you can change your future.

So is special intervention required by Krishna to alter the future from what a sage sees the future to be or can it automatically change independent of Krishna?

Well, once you hear about your future, you can obviously try to change it. Say, the sage sees you in Cuba after two weeks. You had a plane ticket ready. Now, you can burn the ticket and seal the doors of your house and stay indoors. Will you still end up in Cuba?

I wonder, why would a sage who is really able to see the past, present and future, go around telling people details of their future?

The only thing predetermined is the karma you have accumulated, and we know that it can be dissolved through chanting the maha mantra. The karma you come into the world with is mapped in the palm of your hand and in your astrological chart. The difference is that before you took up the path of bhakti you might have been destined to lose an arm for example as part of your negative karma, but now after chanting either nothing happens at all, or you maybe get some minor injury or scratch instead.

As far as free will is concerned, that is also subject to the pull of maya. You have very limited free will until you are finally freed from the ropes of illusion that bind you to the world of cause and effect. There is the question of motivation. Your decisions are influenced by material desires while trapped by maya. Your decisions are influenced by divine love after you advance on the path of bhakti and become free of the clutches of Mayamaya. Divine love has the character of selflessness, whereas love in this world is always some extension of selfishness. You love yourself and all those connected to you, such as family, friends, community and nation.

Krishna can force us to act, but instead He gives us the freedom to act. Yes He knows what you will do in the future, but still it is up to you what actions you will take. What you need to pray for is the wisdom to act in your own best interest.