Chris Miller
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I dislike time travel in SF. Especially into the past where a tiny act creates some drastic change.
I really liked Primer :/ No drastic changes though.Chris Miller said:I dislike time travel in SF. Especially into the past where a tiny act creates some drastic change.
Battlemage! said:I really liked Primer :/ No drastic changes though.
And how heavy they must be!gleem said:Packing so much energy into such small weapons.
BWV said:Mining raw materials in space to send down into Earth's gravity well. Don't see how this would ever be economic vs. just digging deeper holes in the Earth. For that matter, its hard to see how the economics of any human space travel will ever be driven by anything other than tourism or aesthetics.
Stephenk53 said:I think maybe eventually it might if the civilization ends up digging up so much Earth is basically resource-less. And maybe they create ships that can easily go from planet to an asteroid belt cheaply. And maybe they find another civilization that lacks some resources due to a war so humanity trades with them
BWV said:I don't think this would ever happen. Just think, for example, how much mineral wealth is in, say, Antarctica or the Mid-Atlantic Ridge. With robots one could mine asteroids, but also dig far deeper in the Earth than human miners could go. Given the energy requirements of getting material in and out of Earth's gravity well, it should always be less energy-intensive and therefore cheaper to just exploit more resources on Earth. We are nowhere near running out of minerals on Earth currently and have not even touched many areas of the planet that are currently uneconomical to mine
Arrival:Fig Neutron said:I also think that the story line where an alien race invades Earth is over used. Why can't there be a friendly race of alien that comes to Earth?
Fig Neutron said:Why can't there be a friendly race of alien that comes to Earth?
Fig Neutron said:Why can't there be a friendly race of alien that comes to Earth?
Makes for very dull fiction/stories/reading.Fig Neutron said:Why can't more friendly alien visit Earth.
Fig Neutron said:but Superman wasn't fighting friendly aliens.
Vanadium 50 said:Superman is a friendly alien.
V50 is certainly aware that Superman's alien enemies were unfriendly. I'm not clear if you are aware that Superman, himself, was an alien.Fig Neutron said:I said the aliens that he was fighting such as Lobo, Darkseid, or Faora we’re not friendly. (I’m actually not that familiar with Superman.
Hi Freyja:Fervent Freyja said:Time travel irritates me.