by DIOGENES BRITO.

http://uxdiogenes.com/blog/the-three-laws-of-interaction-design

Law #1

"A computer shall not harm your work or, through inaction, allow your work to come to harm."

Law #2

"A computer shall not waste your time or require you to do more work than is strictly necessary."

Law #3

"responsive to human needs and considerate of human frailties."