The drones that Amazon is talking about will be big enough and heavy enough to bring down some helicopters.
Unlikely. I'd expect that 99.9% of helicopters "brought down" by a drone will be from boom strike (or other "pilot error") from the pilot's reaction to seeing one, not the impact itself. How would a dron differ significantly from a bird strike? A larger bird would be similar in weight to a drone, and with similar speeds. Does every hawk strike kill the helicopter?
Knowing Google, they will usually abort failed projects. They tried really hard with Google+ but it has failed almost as bad as windows phone so it's about time to abandon it.
Worldwide, Google+ is far from a failure. In fact, it has more users than Twitter.
I think a lot of Slashdot readers' comments are biased by an amerocentric point of view.
Except solar panels lose power over time.
Not nearly as much as the haters assert.
Plus if you're moving away from the very star powering your craft, well then "forever" is not as long as you'd like.
If you are moving directly away, a solar sail would be more efficient.
And that works fine for me. (using keeppass)
Never test for an error condition you don't know how to handle. -- Steinbach