Newton Laws Refined

Law 1 .Every Software Engineer continues his state of chatting or
forwarding mails unless he is assigned work by external unbalanced manager.

Law 2 . The rate of change in the software is directly proportional to the
payment received from client and takes place at the quick rate as when
deadline force is applied.

Law 3 . For every Use Case Manifestation there is an equal but opposite
Software Implementation.

Bonus :-) Law 4.
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.