But gadgets and sampling alone will never do the tricksince these items are also subject to Murphy's Law(11.10-11) Quality-control instruments and testing devices are also governed by Murphys Law, so they are not reliableBut gadgets and sampling alone will never do the trick since these items are also subject to Murphy’s Law. (11. 10-11) --Quality-control instruments and testing devices are also governed by Murphy’s Law, so they are not reliable