Comment Slashdot is... (Score 1) 75
My conclusion from reading this thread is this:
Slashdot is incapable of analysing new technologies, and decidedly incompetent at predicting the future.
When I watched Star Trek as a boy, I remember thinking how impossible the "comm badges" seemed. Just tap your badge and talk to anyone wirelessly. Yet these would be easy to implement now - we use watches instead because it's more practical. But in general the technologies we have available already are even more amazing. And for example tech like google glass we have even rejected, not because they're not amazing, but because of the way they make people around you feel.
You just can't think about how things are today, and use that to predict the future. You have to expect some progress that seems almost impossible right now. Not impossible according to physical laws, of course (teleporting), but everything that's just really hard, or requires us to do things very differently.... that's actually within range. And battery-powered flight is just a hop-skip and a jump away. Maybe the first 30 years it will be training, then short-haul. And in 50 years long-haul.
Eventually, you could have some kind of booster, that gets you to cruising altitude, then turns back to the airport and recharges for the next departure. Your flight cruises in energy conservation-mode, and charges up during descent to allow multiple landing attempts.
Or maybe most of the structure of the plane is battery. Who knows?
But technology advances, new ideas are proven, leaps in performance are achieved. That's technology.