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Debugging, The Scientific Method, and MastermindPowerPoint Presentation

Debugging, The Scientific Method, and Mastermind

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The Scientific MethodBuilding a Model of Our World

Getting inside the black box

Building a General Model

What causes cancer?

We ask a series of questions, conduct experiments, and try to associate cause and effect.

Diagnosing Specific Cases

What is wrong with this patient?

Now, in a specific case, we conduct tests and compare the answers to the disease model that we have already built.

Diagnosis – A Different Domain

What’s wrong with the car?

What’s Common to These Examples?

- There’s some underlying situation.
- We cannot directly observe the entire system.
- But we can “probe” it with specific questions. The answers we get help us to build a more and more complete model of the system.
- We want to ask as few questions as possible in the process.
- Why?

So How Should We Choose Our Questions?

We want to find a specific location in this territory. What’s the most efficient way to proceed?

With Each Answer We Get a Better Model

- Begin with an initial model that is as rich as possible.
- Loop until only one possible answer remains:
- Based on what we know so far, choose a question that cuts out as many possibilities as we can.
- Use the answer to build a better model.

How To Play

- Player 1 creates a pattern of colors in her 4 holes (the inside of the black box).
- Player 2 must discover the pattern through a series of guesses (experiments) and replies (results). At each move:
- Player 2 puts down a candidate pattern.
- Player 1 replies with a set of black and white pegs:
- Each black peg corresponds to a peg in the right place.
- Each white peg corresponds to a correct peg in the wrong place.

You Can Play Online

http://www.irt.org/games/js/mind/

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