Everything takes longer than you think. You never find a lost article until you replace it. If nobody uses it, there's a reason. You get the most of what you need the least. Nature always sides with the hidden flaw.
Mother nature is a bitch.
These pages contain additional laws from several sources. I removed the list because several sites were already broken down. Having read these pages you can readily see that Murphy was an optimist. If the truth of all these laws makes you depressed, just remember that Murphy's Law even applies to itself. At times, it too goes wrong, allowing you to accomplish something.