So what if Bob is actually a HFT bot as well? He noticed the pattern of cancelled offers from Eve and let himself get bid up to $24.40 on purpose. After Eve buys from Alice, Bob cancels his order, leaving Eve holding the shares. Oh yeah, Alice and Bob, they're the same bot.

I'm a developer of Linux based car radios for a major OEM, so I'm getting a kick of of these replies. Linux can boot fast. A lot has to do with the hardware itself. Managed NAND can take a long time to initialize, SPI NOR flash has a low bandwidth, etc. The manufacturers are asking for things like 1 second boot time. A major concern is how it takes to get the back-up-camera working. I've managed to get a radio booting from POR to userspace in about 220 ms, and getting to done with Linux system startup by 500 ms. The leaves 500 ms for the application software to startup which was enough to meet the customer's requirements.

Is there a prepaid plan that doesn't require you to pay per month? You buy a set amount of data that you keep until you use it up? I'd like to be able to get data about two weeks a year when I'm traveling.

You've taken into account special relativity, but there is also general relativity to take into account. Gravity slows time. Near the Earth's gravity time is slowed. For GPS satellites, their 3.9 km/sec speed slows their clocks by 7 us/day, but the reduced gravity at 20,000 km speeds their clocks relative the earthbound clocks by 45 us/day. So in that case the effect of gravity is greater than that of speed, and they gain time relative to us. Voyager 2 is going about 139 us/day slower than us due to it's speed. Once gravity is taken into account, I'd guess the result is somewhere around 82 us/day slower. Of course it's speed and the gravity it's experienced hasn't remained constant.

Saved lives at Three Miles Island? Who died?