Newton's 2nd Law:
Every book continues to be in the state of rest and covered with dust until and unless internal or external exam appears and speed of page turning is directly proportional to the syllabus to be covered and tension in mind and knowledge gained remains constant.

Newton's 4th law :
Bugs can neither be created nor be removed from software by a developer. It can only be converted from one form to another. The total number of bugs in the software always remains constant.