One way science (and the human mind) works is by induction.  We make observations of the behavior of people and the universe and, based on these observations, produce hypotheses.  We then test these hypotheses by repeated observations.  When sufficient tests have been conducted that support an hypothesis, we choose to call it a law.  The following are my contributions to laws of behavior of the universe and of people.

BALLARD'S FIRST LAW:  (Aka:  The Law of Maximum Inconvenience.)  In any given situation, the universe will behave in such a way as to maximize the inconvenience for the humans involved.  (This subsumes Murphy's Law and all possible corollaries.)

BALLARD'S SECOND LAW:  Once people make up their minds on a topic they are more likely to ignore data that conflicts with their chosen mental model than to alter their views. 

BALLARD'S THIRD LAW:  Any researcher asked the purpose of their research will always answer with an eye to attracting funding to continue doing more of whatever they are doing if they think it is fun and interesting. Therefore they will come up with answers like: It could lead to a great advance in computing, high power lasers, advanced methods of ... (fill in the blank). This is how the application for further grants for research dollars will be worded no matter how speculative the potential application.

BALLARD'S FOURTH LAW:  When they have questions, students will use the materials provided with a course (lab manual, hand-outs, web site, etc.) only when all other options have been exhausted.

BALLARD'S FIFTH LAW:  No lesson plan or teaching method survives contact with students.  (This is a paraphrase of an old military maxim:   "No battle plan survives contact with the enemy.")

BERNEY'S LAW:  "No good deed goes unpunished."  (Dr. Rex Berney, UD Physics Department)