A Number You Did Not Make — Relying On What A Model Tells You

A score a machine produces, a decision about a real person, and a box you cannot see inside. What the number is and is not, when it has quietly stopped being right, and why the human still has to decide.

What you'll learn

• Say what a model is in one plain sentence, tell a precise number from an accurate one, and read a score as a band.
• Find out what a score was built for, refuse to use it outside its purpose, and ask how old it is and when it was last checked.
• Spot the silent wrong number a bad input produces, and stop a score from ending the conversation it should start.
• Keep the deciding and the accountability with a person, and run the four checks that keep a relied-on model honest.

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