2. What made DNA obsolete as the only source of information about humans?
(a) Quantum theory.
(b) Culture.
(c) Song.
(d) Language.

3. How many books a year are estimated to be published?
(a) Two hundred thousand books.
(b) Four hundred thousand books.
(c) One thousand books.
(d) Three hundred thousand books.

4. What did Strominger and Vafa postulate in 1996?
(a) That black holes are empty.
(b) That black holes house new worlds.
(c) That black holes are composed of f-branes.
(d) That black holes are composed of p-branes.

5. What are the size of biological brains limited by?
(a) The womb.
(b) The genome.
(c) Proteins.
(d) Animo Acids.

6. According to Hawking, what lies ahead in the future if no great disaster occurs?
(a) Improving the quality of life for all humans.
(b) Improving human genetics.
(c) Improving animal genetics.
(d) Improving human morals.

7. What can Penrose and Hawking's machinery help them study?
(a) Planetary rings and asteroids.
(b) Solar belts and singularities.
(c) Singularities and black holes.
(d) Black holes and the middle of the earth.

8. What will be preserved if this equation determines the wave function?
(a) Three quarter-determinism.
(b) Half-determinism.
(c) Full determinism.
(d) One quarter-determinism.

9. What may computers also have like human brains?
(a) Multiple energies.
(b) Parallel processing.
(c) Multiple dimensions.
(d) Computational processing.

10. When was absolute time overthrown as an idea?
(a) Fifty years ago.
(b) Ten years ago.
(c) Over 100 years ago.
(d) The idea was never overthrown.

11. What does Hawking explain particles do not have?
(a) Easily-shaped positions.
(b) Molecular shapes.
(c) Well-defined positions or velocities.
(d) Round-bodied physics.

12. On what scale does Hawking think time travel occurs?
(a) An incredibly surface-level scale.
(b) An incredibly small scale.
(c) An incredibly low scale.
(d) An incredibly dense scale.

13. What kind of rotating Einstein universe does Hawking consider?
(a) A spinning universe.
(b) A hypothetical universe.
(c) A realistic universe.
(d) A precious universe.

14. What kind of fluctuations do we have to consider to answer whether or not time travel is possible?
(a) Geological fluctuations.
(b) Spacetime fluctuations.
(c) Quantum fluctuations.
(d) Spatial fluctuations.

15. What is Feynman's history idea called?
(a) Fictional history idea.
(b) Multiple history idea.
(c) Singular history idea.
(d) Imaginary history idea.