It doesn't matter how long Darwin was in the Galapogos. His genius was to ask the questions and suggest some answers that we are atill discussing and expanding on today. I like the analogy of the jigsaw puzzle- very apt. There's a really interesting novel about the voyage of The Beagle. It's called Mr Darwin's Shooter and is the story of Covington, the man who shot the little finches that started Darwin's interest in evolution, as well as Darwin. It made me have a go at reading The Origin of the Species!!!