More of Murphy's Law Murphy's Tenth Law: Mother Nature is a son-of-a-gun. Murphy's Eleventh Law: It is impossible to make anything foolproof, because fools are so very ingenious. Murphy's Twelfth Law: Things get worse under pressure A few additions to Murphy's Laws ... To study a subject best, understand it thoroughly before you start. If an experiment works, something has gone wrong. If mathematically you end up with the incorrect answer, try multiplying by the page number. When in danger or in doubt, run in circles, scream and shout!