Mike,

I take exception to some of your answers.

1) If you watch has stopped, what good is setting it? You have to fix it first.

2) On earth, up has meaning. Since the instructions were from earth, they do have meaning. Which is movement away from the center of the earth.

3) You can measure the absence of something. A hole in the ground is the absence of ground. You can measure the hole's depth, the circumference, and it's capacity.