When they mentioned "other settings, unrelated to AdS, in which matter or energy is cooped up within a physical system that has no escape hatches." I thought im

When they mentioned "other settings, unrelated to AdS, in which matter or energy is cooped up within a physical system that has no escape hatches." I thought immediately of the fusion reactor I've been working on. In my device, an arangement of static fields creates a region in which deuterium energised in a specific reflects back to the center forever and has no outlet even after non-fusion collisions. The "instability" in my system comes because the extreme stability in the oscillation should cause even a rare event (DD fusion) to happen eventually with 100% probability.