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When only two guys were (mainly) responsible for (pushing) what you said, namely SJ and EM with the internet and the electric car+energy storage respectively,

by eaenki 7y ago

When only two guys were (mainly) responsible for (pushing) what you said, namely SJ and EM with the internet and the electric car+energy storage respectively, it’s telling. Besides it’s just three things. There’s absolutely no excuse on why we aren’t flying commercially five times as fast and Flying personal electric vehicles.

mdonahoe 7y ago
The excuse is that Society doesn't care that much about moving our meat sacks around 5x faster, when it can move minds around the planet instantly. Instead of building flying cars, we digitized ourselves.
paulryanrogers 7y ago
> There’s absolutely no excuse on why we aren’t flying commercially five times as fast and Flying personal electric vehicles. Supersonic is noisy and probably has cost and safety concerns beyond conventional airliners. Physics and engineering have limited electric air travel. There are also those boring issues like the environment and distractions like poverty, healthcare, and warfare getting in the way too.
caymanjim 7y ago
The only place you can fly supersonically is over the ocean, because of the noise. It's also more dangerous, and consumes vastly more fuel. The cost per passenger is enormous, and the planes can't scale up large enough to offset it. The technology doesn't exist to make it economical. A big reason why supersonic flight isn't all that important is that the actual in-air flight time is usually under half the total trip time. If I'm flying from New York to London, the whole trip takes about twelve hours door-to-door. It takes more time to travel to the airport, wait around, board, taxi, land, taxi, go through immigration, retrieve luggage, and get to my destination than it does to fly across the Atlantic. Going Concorde-level supersonic would only reduce the whole trip time to about ten hours instead of twelve.

by eaenki 7y ago

mdonahoe 7y ago

The excuse is that Society doesn't care that much about moving our meat sacks around 5x faster, when it can move minds around the planet instantly. Instead of building flying cars, we digitized ourselves.

paulryanrogers 7y ago

> There’s absolutely no excuse on why we aren’t flying commercially five times as fast and Flying personal electric vehicles. Supersonic is noisy and probably has cost and safety concerns beyond conventional airliners. Physics and engineering have limited electric air travel. There are also those boring issues like the environment and distractions like poverty, healthcare, and warfare getting in the way too.

caymanjim 7y ago

The only place you can fly supersonically is over the ocean, because of the noise. It's also more dangerous, and consumes vastly more fuel. The cost per passenger is enormous, and the planes can't scale up large enough to offset it. The technology doesn't exist to make it economical. A big reason why supersonic flight isn't all that important is that the actual in-air flight time is usually under half the total trip time. If I'm flying from New York to London, the whole trip takes about twelve hours door-to-door. It takes more time to travel to the airport, wait around, board, taxi, land, taxi, go through immigration, retrieve luggage, and get to my destination than it does to fly across the Atlantic. Going Concorde-level supersonic would only reduce the whole trip time to about ten hours instead of twelve.