Details matter most where nobody expects failure to begin.

Attention naturally gathers at the places that look risky, which is precisely why those places rarely fail. Failures start in the parts everyone considers settled, the routine step, the component that has always worked, the assumption so old that nobody remembers making it. Confidence removes scrutiny, and the absence of scrutiny is where trouble accumulates.

Pick something you consider entirely reliable and examine it as though it were new. Ask when it was last actually checked rather than last assumed to be fine. The point is not constant suspicion, only a periodic visit to the places your attention has stopped going.