WiFi
WiFi's relationship with reliability resembles that of a cat with its owner: technically present yet fundamentally unpredictable. The technology works beautifully when explaining its merits to sceptics, then develops sudden onset amnesia during crucial video conferences. Microwave ovens, fish tanks, and neighbouring networks all conspire to disrupt its function.
Yet despite these theatrical failures, WiFi successfully transmits billions of data packets every second worldwide. The 99.9% success rate simply goes unnoticed whilst we obsess over the 0.1% failure rate during important Zoom calls. It is, statistically speaking, remarkably reliable, though it has excellent public relations for appearing otherwise.