WiFi
The relationship between humans and WiFi reliability resembles that of a long-married couple: functional most days, with occasional spectacular failures that everyone pretends didn't happen. The technology operates on radio frequencies subject to interference from walls, microwaves, neighbouring networks, and seemingly, the general mood of the universe.
Yet for all its occasional tantrums, WiFi maintains remarkable uptime in aggregate. The average home network operates successfully for approximately 99.5% of its active hours, a figure that would satisfy most demanding employers. When failures occur, the ritual of router-cycling has achieved near-religious status in households worldwide.
Tesla
Tesla vehicles present a fascinating case study in reliability perception versus reality. The absence of traditional internal combustion components eliminates entire categories of mechanical failure, yet introduces novel concerns regarding battery degradation, software glitches, and the occasional spontaneous door handle malfunction.
Consumer Reports data suggests Tesla reliability ratings fluctuate with the unpredictability of British weather, some years earning praise, others earning rather pointed criticism. The brand's over-the-air update capability allows problems to be addressed remotely, though this same feature has occasionally introduced problems that didn't exist prior to the update's arrival.