One of the people who set Charles Darwin along the road to evolutionary theory was not a scientist, but the Governor of the Galapagos Islands, Nicholas Lawson. When Darwin and the Beagle crew landed on Charles Island, Lawson invited him to dinner. As they talked, Lawson mentioned that the giant tortoises for which the Galapagos chain was named varied noticeably between islands. In fact, said Lawson, if any tortoise was brought to him, he could identify which island it came from.
It turns out that the tortoise-naming party trick was not exclusively Lawson’s. Whether he was just repeating what the locals said, or had actually studied the tortoises personally, the fact remains that the person who set Darwin on the course of studying variation among species on the Galapagos islands was not a scientist.
John Bryant, the author of last week’s guest post, told this story during his lecture at this year’s Faraday Summer course, and I enjoyed it because Continue reading