A safety factor is applied in the wrong direction

A fictional risk worksheet states a minimum acceptable visibility of ten metres and a maximum heat-flux criterion under a separate model. An analyst divides both thresholds by a factor and calls each change more conservative without examining the inequality. Another record labels two supplies independent even though both rely on the same switchboard. A report then claims that one successful device test proves complete building compliance. No official acceptance or operational decision is made in this exercise. Identify the weakened minimum, shared dependency and overclaimed evidence, then explain why a documented acceptance rule and the actual system boundary must precede arithmetic and conclusions.