Quote:
Originally Posted by barryem
I'm no scientist but for me it's hard to imagine how "hard to imagine" equals "impossible". I'm sure flashlights were hard to imagine a couple of centuries ago.
I'm a computer programmer, retired now for about 25 years. I remember when I was new in the field, which was itself fairly new, around the mid 1960s, before computers even had screens, a bunch of us would get together for lunch or after work and speculate on the future of computing. We wove all sorts of fantasies. But we never imagined anything like this!
Barry
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Sure, but nothing we have accomplished so far goes against the laws of physics. Our innovations are incredible and were difficult to accomplish, but they have all been within the realm of what we know is possible in physics. For these sci-fi "technologies" to be true, then much of what we "know" would have to be wrong. Stunningly wrong. Yet, we can't find any evidence of that after long and careful study. People 200 years ago were ignorant about electronic devices; we are not ignorant about the physics relevant to galactic travel and communication.