I watched a youtube engineering video recently where they did a deep look into an indoor swimming pool disaster that happened one time in europe. The roof just suddenly collapsed and crushed dozens of people inside. They couldn't figure out why, the whole thing was structurally sound and thoroughly engineered, but it barely lasted a few years before suddenly caving in. It turns out that these certain fasteners they used were never tested for corrosion resistance in a high-humidity high-chlorine environment. The chlorine ate through the metal fasteners.

It makes you realize that although many things are engineered well, rarely (if ever) has everyone thought of everything. I mean hell, they had thousands of the top engineers in the world working for decades on the Artemis 2 mission, planning and testing literally everything, running through every possible scenario, re-checking everything hundreds of times, and STILL the fucking toilet didn't work right, their emails kept failing, a sensor that monitors the launch abort system had an error, and the camera that is supposed to monitor the landing chutes wouldn't turn on.

It's literally impossible to make anything perfect, the best we can ever hope for with anything is that it's "good enough".