The following questions are addressed in this chapter. They are better discussed in a group to allow a variety of opinions to emerge. The relevant section link is given after each question:
1. How can the divide between quantum theory and relativity be reconciled? (5.1.1)
2. Does relativity challenge the idea that matter is made of particles? (5.1.2)
3. If the earth is a moving platform, how fast is it carrying us? Why doesn’t it matter? (5.2.1)
4. Why did Einstein say that special relativity is why our reality isn’t weird? (5.2.2)
5. Why does our causality depend on the speed of light being constant? (5.2.3)
6. Could we travel to the next galaxy and back in a lifetime? What is the downside? (5.2.4)
7. Is mass a form of energy, energy a form of mass, or do both come from something else? (5.2.5)
8. What is zitterbewegung? What theory predicts it? (5.3.1)
9. How can a photon move at all if time stops for it, as special relativity says? (5.3.2)
10. How do solar sails convert radiant energy into kinetic energy of movement? (5.3.3)
11. How can the earth’s matter move objects towards it? (5.4.2)
12. How can gravity accelerate a free-falling object without touching it? (5.4.3)
13. How can gravity bend light if it has no mass? (5.4.4)
14. Why does gravity only attract but charges can attract or repel? (5.5.2)
15. Will physics ever find a single magnetic pole on its own? (5.5.3)
16. What three matter properties give gravitational, electric and magnetic fields? (5.5.4)
17. Is energy universally conserved? (5.6.1)
18. What is universally conserved? (5.6.2)
19. How does the evolution of matter increase order? (5.6.5)
20. Will our universe end suddenly, gradually, or not at all? (5.6.6)
21. Can one physical world create another that simulates itself? Why or why not? (5.7.1)
22. If we are an accident, is the universe the same? (5.7.2)
23. Why might the existence of our universe depend on its observers? (5.7.3)