3.3 Why metaphor/analogy principles?

Thread 1: from learning science

1. Reasoning with analogy is a major approch for creating, refining, or re-constucting a scheme.
2. The shared logic and the context-dependent sitution factors
3. Spiral curriculum
4. Consilience

Thread 2: from computer science

1. Database
2. Template
3. Data-mining

Thread 3: from Kathy's experiment