What is a major difference among science, engineering and technology?

• Technology: Fire can be used to cook food.
• Science: Burning wood produces heat, water, and carbon dioxide. Heat denatures proteins in food.
• Engineering: Building a fireplace and chimney makes it easier to cook with fire without filling the room with smoke.

[Michael Dickman]

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Science asks the question, why? Engineering asks the question, why not? Technology tries to answer the question, how? [Robert Baber]