A few weeks ago, a writer friend asked for blog prompts and, based on an intersection of mutual interests, I suggested talking about exactly what was going on in 16th century Prague under Rudolf II that made it a fascinating place to write about. (My own intersection is that Antuniet Chazillen's book of alchemical gemstone secrets was written at that place and time.) As it happened, another writer and mutual friend stepped up to address the question, and the essay went live today. Check it out!