Book contents
- Frontmatter
- Contents
- Preface
- Summary and plan of the book
- Introduction
- 1 Logic on the Underground
- 2 The psychology of logic
- 3 The fox and the crow
- 4 Search
- 5 Negation as failure
- 6 How to become a British Citizen
- 7 The louse and the Mars explorer
- 8 Maintenance goals as the driving force of life
- 9 The meaning of life
- 10 Abduction
- 11 The Prisoner’s Dilemma
- 12 Motivations matter
- 13 The changing world
- 14 Logic and objects
- 15 Biconditionals
- 16 Computational Logic and the selection task
- 17 Meta-logic
- Conclusions of the book
- A1 The syntax of logical form
- A2 Truth
- A3 Forward and backward reasoning
- A4 Minimal models and negation
- A5 The resolution rule
- A6 The logic of abductive logic programming
- References
- Index
13 - The changing world
Published online by Cambridge University Press: 07 September 2011
Book contents
- Frontmatter
- Contents
- Preface
- Summary and plan of the book
- Introduction
- 1 Logic on the Underground
- 2 The psychology of logic
- 3 The fox and the crow
- 4 Search
- 5 Negation as failure
- 6 How to become a British Citizen
- 7 The louse and the Mars explorer
- 8 Maintenance goals as the driving force of life
- 9 The meaning of life
- 10 Abduction
- 11 The Prisoner’s Dilemma
- 12 Motivations matter
- 13 The changing world
- 14 Logic and objects
- 15 Biconditionals
- 16 Computational Logic and the selection task
- 17 Meta-logic
- Conclusions of the book
- A1 The syntax of logical form
- A2 Truth
- A3 Forward and backward reasoning
- A4 Minimal models and negation
- A5 The resolution rule
- A6 The logic of abductive logic programming
- References
- Index
Summary
In mathematics, semantic structures are static and truth is eternal. But for an intelligent agent embedded in the real world, semantic structures are dynamic and the only constant is change.
Perhaps the simplest way to understand change is to view actions and other events as causing a change of state from one static world structure to the next. For example:This view of change is formalised in the possible world semantics of modal logic. In modal logic, sentences are given a truth value relative to a static possible world embedded in a collection of possible worlds linked with one another by an accessibility relation.
- Type
- Chapter
- Information
- Computational Logic and Human ThinkingHow to Be Artificially Intelligent, pp. 166 - 178Publisher: Cambridge University PressPrint publication year: 2011