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Back to the lesson libraryMECHANISM · 11 MIN
M04.6 CONNECT THE MECHANISM

Reason when new facts can overturn a conclusion

"I got a bird named Tweety." "Keep the windows shut!" "Tweety's a penguin." See how a reasoning system takes back a sensible conclusion, and why common sense defeated decades of hand-written rules.

LESSON OVERVIEW11 min lesson

Lesson overview

"I got a bird named Tweety." "Keep the windows shut!" "Tweety's a penguin." See how a reasoning system takes back a sensible conclusion, and why common sense defeated decades of hand-written rules.

What you’ll explore

  • Default reasoning supports tentative conclusions that can be withdrawn when exceptions appear; commonsense systems must specify how missing information and conflicting rules are handled.
GO TO THE SOURCE

Original explanations, connected to the research.

Artificial Intelligence: A Modern Approach — authors’ materials
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