The Greatest Show on Earth: The Evidence for Evolution book club questions

1. 1.

   Dawkins opens with the analogy of a Roman historian who must defend the existence of Rome. Is that analogy fair, or does it understate the strength of creationist arguments?

2. 2.

   The fossil record is incomplete by nature, yet it still confirms evolution's predictions. How do you evaluate evidence from a necessarily incomplete record?

3. 3.

   The Lenski E. coli experiment ran for over 30 years and observed novel metabolic abilities evolving. Does direct observation of evolution feel qualitatively different from inferring it from the fossil record?

4. 4.

   Pseudogenes appear in the same broken form in related species. Is that the most convincing molecular evidence for common descent, or is there something stronger?

5. 5.

   Vestigial structures like the human coccyx and wisdom teeth cause real problems for real people. Does that count as evidence against intelligent design, or is it compatible with some versions of it?

6. 6.

   Biogeography shows that species are distributed where their ancestors were, not where they'd be most usefully placed. Why do you think this argument gets less attention than the fossil record in popular discussions of evolution?

7. 7.

   Dog breeding demonstrates that extreme phenotypic diversity can emerge from selection over centuries. What does that imply about what selection over millions of years can produce?

8. 8.

   Dawkins is openly combative about creationism in this book. Does that tone help or hurt the book's persuasive goal with someone who is genuinely uncertain?

9. 9.

   The genetic code is essentially universal across all life. What does that imply about the last universal common ancestor, and how confident can we be about inferences that far back?

10. 10.

    Which piece of evidence in the book did you find most convincing? Which felt least clear to you, or in most need of additional explanation?

11. 11.

    Evolution by natural selection has no goal or direction. What does that imply about human exceptionalism — are we just one result among countless contingent possibilities?

12. 12.

    Dawkins distinguishes between evolution as fact and the theory of evolution as mechanism. Is that a useful distinction in practice, or does it invite misunderstanding?

How to run the discussion

• Pick six to eight, not all of them. An hour of real discussion covers fewer questions than anyone expects, and racing the list is what makes a book club feel like homework.
• Open with what people noticed, not what they concluded. Asking for a verdict first hardens opinions before anyone has heard each other.
• Let the disagreement run. The questions below that split a room are the ones worth the time; the ones everyone answers the same way can be skipped.
• Ask the quiet person a specific question. A direct, narrow question is far easier to answer than an open invitation to contribute.