Cat
Feline reliability operates on biological rather than mechanical principles. A healthy cat maintains continuous operational status for 15 to 20 years, requiring no software updates, battery replacement, or technical support. System failures, when they occur, manifest gradually and predictably through natural ageing processes.
The cat's autonomous functionality proves particularly robust. Self-cleaning protocols execute automatically. Entertainment derives from environmental stimuli without human input. The system never crashes, though it does occasionally produce unexpected outputs in the form of deceased wildlife deposited in inconvenient locations.
Smartphone
Smartphone reliability follows a carefully engineered obsolescence curve. Battery capacity degradation ensures devices require replacement within 2 to 4 years under normal usage patterns. Software updates progressively reduce functionality on older hardware, creating artificial performance limitations.
When failures occur, they prove catastrophic and immediate. Screen damage renders devices non-functional within milliseconds. Water exposure causes total system failure. The mean time between failures for smartphones remains orders of magnitude shorter than for biological companions, despite significantly higher manufacturing precision.