The online group Edge.org started the year by asking scholars, writers and other people with time on their hands to dream up some new universal truths. You know, like Murphy's Law. We like the one from John Maddox, the longtime editor of Nature magazine, which our editors have shortened to this: "Reviewers who are best placed to understand an author's work are ... prolific sources of minor criticism, especially the identification of typos."
Universal. We'd like to offer out own little universal law of commercial shipping. Every discount is paid for in another way, but never in a way the accounting department cares about.