1. Introduction.- 1.1 Topic.- 1.2 Hardware Evolution.- 1.3 Motivation.- 1.4 The Thesis.- 2. Context.- 2.1 Inspiration.- 2.2 Evolutionary Algorithms for Electronic Design: Other approaches.- 2.3 Multi-Criteria EAs: Area, Power, Speed and Testability.- 2.4 A Philosophy of Artificial Evolutionx.- 2.5 The Position of this Book Within the Field.- 3. Unconstrained Structure and Dynamics.- 3.1 The Relationship Between Intrinsic Hardware Evolution and Conventional Design Techniques.- 3.2 Unconstrained Structure.- 3.3 Unconstrained Dynamics.- 3.4 The Relationship Between Intrinsic Hardware Evolution and Natural Evolution.- 4. Parsimony and Fault Tolerance.- 4.1 Insensitivity to Genetic Mutations.- 4.2 Engineering Consequences of Mutation-Insensitivity.- 4.3 Explicitly Specifying Fault-Tolerance Requirements.- 4.4 Adaptation to Faults.- 4.5 Fault Tolerance Through Redundancy.- 4.6 Summary.- 5. Demonstration.- 5.1 The Experiment.- 5.2 Results.- 5.3 Analysis.- 5.4 Interpretation.- 6. Future Work.- 6.1 Engineering Tolerances.- 6.2 Applications.- 7. Conclusion.- Appendix A. Circuit Diagram of the DSM Evolvable Hardware Robot Controller.- Appendix B. Details of the Simulations used in the ‘Mr Chips’ Robot Experiment.- B.1 The Motor Model.- B.2 The Movement Model.- B.3 The Sonar Model.- References.