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Comment Re:Autopilot? (Score 1) 393

I must be missing something.

Aircraft operate in 3 dimensions, trains operate for the most part in one - which implies that there is much less of a chance of 2 planes being at the same place at the same time than 2 trains being at the same place a t the same time. The airplane autopilot flies at certain altitudes depending on the path, and if the plane stays at the assigned altitude, there is almost no chance for crossing paths. Trains going in different directions share tracks in a lot of places, and they can't move out of the way of each other - timing is everything in train safety (hence we have a few time zones rather than hundreds of local times)

Comment Re:What I don't understand (Score 1) 393

Well, if you couple the gps to the odometer, that should work most of the time, even with brief gps outages.

Most of the time isn't considered good enough for train safety. Unlike the interstate, there aren't dedicated lanes going each way - there are a lot of single tracks sharing traffic going in both directions.

Comment Re:No absolute speed governor? (Score 1) 393

Planes are faster bro, even with loading/unloading time, which is why they [sic] can actually make money on their own . . .

Which is why every major airliner (except Southwest) has gone bankrupt in the recent past?
(Also, planes are not always quicker for short distances, if there are actually trains going where you're going.)

Comment Re:No. (Score 1) 94

Plenty of dogs will consistently catch a ball out of the air - you want to tell me they don't know where it's going to land ? Children catch balls many years before we teach them the maths needed to calculate their curves.

The argument was that you don't need to understand the physics to predict it. And the dogs don't understand the physics, but can predict where it's going.
Although I must add, my older dog, whose running days are somewhat behind her, can predict the balls path much better because she actually watches it before going after it, while my younger dogs tend to immediately take off to where they think I threw it and take their eyes off the ball, though they still usually beat her to it even when they have to make a U-turn.

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