Ex nihilo
As a prologue to a new research project named "The Bottom Line : a cartography of silence", I am getting into figuring the idea of annihilation due to the collision of two anti-particles, based on metaphysical questions from my childhood.
In the early 1980s, during the seasonal sales, shop windows were plastered with a cryptic phrase that became a source of great worry and concern: “Tout doit disparaître” (“Everything must go,” or more literally, “Everything must disappear”). As a child of no more than 4 years old, I took that as a terrible metaphysical threat.
Around that same time, on my way to school, every day I passed by an empty lot where there used to be an old building. On the adjoining side wall of another building that remained in place, we could still see the wallpaper squares marking the locations of the missing rooms and inhabitants.
Thus, annihilation was completely possible, and probably the inevitable, unifying horizon for the entire world and universe as we know it.