David Finnigan in ‘You’re Safe til 2024’. Photo: Leanne Dixon Theatre / “You’re safe til 2024: Deep History”, David Finnigan and Reuben Ingall, Courtyard Studio Canberra Theatre, until April 10. Reviewed by SAMARA PURNELL IMAGINE dropping grains of sand into a pile – over time avalanches occur… and we are poised on the brink of change. The grains of sand represent the human population and these avalanches in time are the premise of “Deep History”, where a female protagonist, of our imagination, travels through time, beginning 75,000 years ago with the volcanic eruption of Mount Toba, Indonesia. The ashy fallout, which may have caused a volcanic winter and a bottleneck in population, is the first critical event described, where six, key survival “take-aways”, scribbled on butcher’s paper are promised. This first one states the population is around 15,000 and the lesson is “Survival is possible”.