Cat
The domestic cat exhibits persistence of an almost geological character. Once a cat has determined that a human should be awake, should provide food, or should cease working on their laptop, it will pursue this objective with unwavering commitment. Tactics escalate predictably: initial meowing progresses to furniture scratching, then to strategic positioning upon keyboards, and ultimately to the deployment of direct physical contact with the human face. A cat seeking attention has never, in recorded history, simply given up and wandered away.
This persistence operates on timescales from minutes to years. The cat that wishes to access a closed room will attempt entry for decades if necessary, pausing only for meals and naps before resuming operations.
Boredom
Boredom demonstrates a different form of persistence—one characterised not by escalation but by inexorable creep. It arrives unbidden during lengthy meetings, airport delays, and Sunday afternoons. Unlike acute emotional states that burn brightly and fade, boredom settles into consciousness like sediment, accumulating gradually until the individual realises they have been staring at a wall for seventeen minutes.
However, boredom's persistence falters in the face of even minimal stimulation. A single notification, a passing thought, or the arrival of a cat can dispel hours of accumulated ennui instantaneously. Boredom is persistent but fundamentally fragile—always present, never quite permanent.