History writer Troy Lennon has captured the real essence of human courage challenging science, describing the work and untimely death of volcanologist David Johnston 40 years ago. (Scientist died as Mount St Helen blew its top, 18/5). The same selfless bravery is evident as the world records more than 1000 deaths of health workers battling the murderous COVID-19 virus. When science entices our curiosity like the sirens of Greek mythology, the dangers and benefits of exploring Pandora’s box are unfairly shared. A singular, academic focus in David Johnston’s life might well have blinded his instinct for safety and survival. As is true in the fight with COVID-19, much is unknown, including assessing risk. No volcanic smoke can hide our great admiration of the risk takers, who ultimately make our lives safer. Alan Sexton, North Parramatta. 19May2020.