iPhone
The iPhone demonstrates variable reliability profiles across its operational lifespan. Initial performance proves exemplary, but degradation accelerates predictably beyond the two-year mark. Battery capacity diminishes, software updates introduce performance limitations, and spontaneous malfunctions occur with increasing frequency.
Network dependency creates additional vulnerability. The iPhone's most impressive capabilities—communication, navigation, information access—require continuous data connectivity that disappears entirely at cruising altitude, in remote locations, and during precisely those emergencies when reliable functionality would prove most valuable.
Pilot
Commercial Pilots operate within systems designed for redundant reliability. Medical certification requires biannual examination, proficiency checks occur regularly, and performance monitoring ensures degraded specimens are removed from service before critical failure. The profession has developed rest requirements, crew resource management protocols, and checklists specifically to mitigate human reliability limitations.
Furthermore, Pilots operate in pairs precisely because human reliability, whilst impressive, cannot match the criticality of their function. This systematic approach to redundancy produces aggregate reliability metrics that exceed individual human or device capability through intelligent system design.