I make an exception to my regular no-phone rule whereas strolling, as scanning the QR codes alongside the route unlocks a captivating audio companion. As I stroll, I hearken to tales about Hutton the polymath; farmer, chemist, naturalist. A determine of the Scottish Enlightenment, he established a social membership with the economist Adam Smith and chemist Joseph Black, who found carbon dioxide. It was a time, the narration says, when “all kinds of recent and mental concepts have been being mentioned” in Edinburgh.
