One, inability to use feedback to direct it towards interesting phenomena. Even if you can stop it, it doesn't mean you can get close enough to anomalous features on the surface. Two, lack of ability to escape local minima. I don't know how much of a problem this would be on mars, but I just went to death valley in February and saw the rows of tumbleweeds stuck on the fences and in crevices (useful if you plan to sprout and reproduce).

High up enough to be free from cat burglars and suicide bombers but low enough to be reached by fire brigade ladders.

There's a decent market for low-pollution electricity generators for cells and transmission towers in the small archipelagos to serve small villages.

I want my DNA stored until cloning is perfected, so I can be reconstituted into a future as a slave of a silicon uber-entity.

Yes, ANA has great food, and they're first in line for the Dreamliner deliveries, which should drop 30 minutes off the long travel times to Asia.

And how exactly does one equalize pressure in a small child's ear when one gives a damn? Many times the crying is from pain, not just misbehavior. Our youngest has no problems (perhaps a wider ear canal) and the elder always experiences pain during pressure changes.

One can also make diamonds harder by isolating and using heavier isotopes. A diamond of purified carbon-13 is harder than a mix of 12,13,14. Man-made diamonds can actually be harder than naturally occurring ones.

Ask Mexico to pay Israel (or would it be the Vatican) for any Christian icon, including crosses, Virgin Mary statues, and patron saint candles, and see what the response is.

Sure, Republicans aren't pandering. Professional women love nothing more than to be well-qualified, experienced, hard working and then get passed over for a younger, hotter, and far less experienced woman selected by an old guy in charge.