Niven's Laws are the hard SF author's ideas of how the Universe seems to work. I was wondering how the HN community would formulate them - what would you add?

- Never fire a laser at a mirror.

- Giving up freedom for security is beginning to look naïve.

- It is easier to destroy than to create.

- Ethics change with technology.

- The only universal message in science fiction: There exist minds that think as well as you do, but differently.