If someone is near death in hospital, perhaps after a car crash, is there any point in praying for that life to be saved?

Wasn't the crash part of some god's plan? Hasn't that god already decided the person's fate?
Update: If someone is driving on an otherwise deserted road, late at night, and the car goes off a cliff, and the person is now near death, no human even knows the situation at first. Nobody is praying. I don't believe in the power of prayer.
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