CPU
The CPU is a tiny despot wandering the wastelands of circuits, endlessly judging numbers. It blindly ingests commands and, like an overreacting hypochondriac, lights up the red lamp at the slightest arithmetic misstep. Silently bearing the workload imposed by developers' ambitions and budget constraints, it stages fanatical strikes (thermal throttling) under sudden heavy load. While it remains, it is the unsung hero underpinning human civilization, yet it also cruelly guides you to the power switch when you beg it to never stop.