Dog
A properly cared-for dog offers consistency spanning twelve to fifteen years. Each morning, the dog will be present. Each evening, the dog will greet you with enthusiasm that borders on clinical mania. This reliability requires no booking, no delivery tracking, no concerns about restaurant availability. The dog is simply there, a constant in an otherwise chaotic existence.
However, dogs are actively reliable rather than passively available. They require feeding at consistent times. They demand walks regardless of weather conditions. Their reliability comes packaged with obligations that some might describe as non-negotiable lifestyle constraints.
Nachos
Nacho reliability depends entirely upon supply chain integrity. The coronavirus pandemic demonstrated how quickly tortilla chip availability could become problematic. Economic fluctuations affect cheese prices. A single closed restaurant can destroy an evening's nacho plans. Furthermore, nachos suffer from what engineers term catastrophic structural failure under time pressure, the soggy nacho problem that transforms anticipation into disappointment.
The window of optimal nacho consumption spans approximately seven to twelve minutes from preparation to unacceptable sogginess. This narrow temporal window demands immediate attention that dogs, in their patient constancy, never require.
VERDICT
Dogs remain reliably available for years. Nachos remain reliably edible for approximately eight minutes.