Study Guide: Chapter 2 — Closer to Reality

Core Idea

All perception is theory-laden inference; instruments are just better inference chains. Processed telescope imagery is more direct than the naked eye, not less. Reality of an entity depends on explanation quality, not chain length.

Key Terms

Theory-laden observation · virtual-reality chamber · inference chain · observable/unobservable (dissolved)

Case Summary

Deutsch "sees" a galaxy: every photon hitting his retina came from the screen, none from the galaxy — yet the observation is more faithful than any unaided look.

Application Checklist

• [ ] Audit the theories embedded in your key metrics pipeline
• [ ] Give "I saw it myself" the same scrutiny as a dashboard
• [ ] Trust instrument over gut when the inference chain is better-criticized

Self-Test

1. Why is instrumented observation more direct, not less?
2. What is the "virtual-reality chamber"?
3. How does this dissolve the observable/unobservable line?