I'd be really impressed if I could get out of the car at one airport, leave the luggage in the trunk, and have the car meet me wherever I landed.
By 1988 we were networking PCs and Sparcstations using PCNFS and running X11 clients on the PCs using Hummingbird software. That allowed us to move the workstation out of the engineers office and into the server room where no one person could horde the physical machine by virtue of it being located on his/her desktop. It was a giant step backward for personal computing but a leap forward in productivity since the grunts didn't have to wait for the boss to leave for lunch in order to get into his office to use the decent computer.
I was reared on a farm and learned to drive on tractors and large trucks. In a farm truck, when you look in the center mounted rear view mirror all you see is the livestock staring back at you from the bed of the truck, or the bed of the truck itself if you're hauling grain. You learn to backup using the outside rearview mirrors. They're aimed down the side of the vehicle and give you at least the idea of where the rear wheels are even if you don't actually see them. You draw an immaginary line for those wheels to follow and stear the truck along it. But you never look back, only in the mirror. With a 30 foot long vehicle the front end can swing 20 feet to either side while you're lining the backend up to a loading dock or the barn door. After you run over a few outbuildings and your favorite motorcycle because you weren't looking where the front end was going you learn to pay attention to both ends. You NEVER face backward to back up a vehicle.
So what's with this thing about sideview mirrors? Yes, I know about those little round convex stick on things that let you see the people who insist on driving in your blind spot and who deserve to get run over when somebody bigger than them changes lanes. I have them. They came with the aftermarket turn signals mounted on my mirrors. The only thing I hate worse than having to share the road with idiot drivers is having to fill out insurance claims after I run over one of them. Would I like to have a camera to replace the blind spot mirrors. NO. What I'd like is some type of short range collision avoidance system that, when I turn on my blinker, it checks for a clear path, and gives me a verbal OK or tells me to WAIT. I don't need anything that distracts my eyes while I'm trying to navigate a path between vehicles moving at different speeds of upwards of 80 miles an hour.
In 15 years of formal education in the English language no one ever mentioned the word 'syntax'. We diagrammed sentences and conjugated verbs and identified parts of speech but no one ever explained the mechanics of what or why we were doing it. It was just English and it was necessary. Two weeks into computer programming and I knew WHY it was necessary. Understanding the structure of language, be it a computer language or a human one, I'm better equiped to learn new ones of either type.
Are learning to program and learning a foreign language equlivant? NO. We talk to machines: we communicate in a foreign language.
A good anvil shoot will fire the top anvil 75'-200' into the air. The secret is recoil. The blast only separates the anvils a matter of inches. The top anvil hops up and the bottom anvil drives down, compressing whatever base it is resting on. [ Around here we use an eight to ten foot length of tree trunk about fifteen inches in diameter buried vertically in the ground.] The base decompresses, driving the bottom anvil upward, ramming it into the top anvil, which, if you've lucked up and tuned the system perfectly, has not quite reached the top of its trajectory. The recoil from the bottom anvil kicks the already moving top anvil into high gear and sends it soaring.
The only reason the Chinese aren't flying over the Eastern seaboard is because their equipment doesn't have the range for it.
China can currently put humans into orbit. The USA can't. China has demonstrated that they can hit a target in deep space. I'd say their range is pretty Universal.
China has thermonuclear weapons. You only need to deliver a couple of those to put a serious dent in another countries ego. They could easily toss one out of their orbiting spacecraft or, with the size of their labor force, they can take turns rowing a boat over and launch it with a catapult. Relying on their lack of logistical capability for your (and my) safety is naive if not just plain stupid.
Getting "metric ton" accuracy for measuring the weight of the moon would be outstandingly accurate.
Actually it would be outstandingly wrong since "metric ton" is a unit of mass, and weight is a unit of force.