A page of useful and pertinent information left open all day on a laptop, which was finally closed down when it became clear it wasn't needed, has become vitally important just afterwards, it has been confirmed.
A mere 2 minutes and 48 seconds after closing the tab, that information suddenly became of huge value. For luck's sake.
Sources have revealed that the page in question, which is now proving somewhat of a bugger to find and reopen, provided a detailed explanation of the differences between Murphy's Law and Sod's Law.