The Grid Just Went Dark

You are trapped in a glass boardroom on the ninetieth floor when the whole city's power dies at once — elevators dead, doors magnetically sealed, one emergency battery blinking with maybe forty minutes of light left. On the table sits a single satellite phone that can call out exactly once before its charge fails. Half of you built the systems that just collapsed; the other half never trusted a machine in their lives. Someone in this room tripped the failsafe on purpose, and the smoke rising from the stairwell says they are not done. Decide whose world caused this — and who gets to make the one call that saves the rest.