Priya checked every recommendation in her report. She did not check the numbers under them, and one was wrong in front of eight people. Use the machine for everything it does well. Check it in proportion to what carries your name.

A machine now explains science to Kavitha’s class more patiently than she can. When anyone can have the knowledge, what is depth? An old Indian teaching answers: hearing is never enough. Depth is what knowing does to you.

A machine read an X-ray in four seconds and found what a radiologist had missed. Nobody was fired. Part II asks what the machine is, what it replaces, what it cannot, and how far to believe it, with a date on every claim.