I mentioned the following in a similar thread you participated in as well;
H.G. Wells often has folks debating for fun if he
actually made a 'time machine.' Some of his work (written in the 1890's) speaks of future events, wars, weapons and so on that hint at things quite similar. What someone pointed out to me I always found fascinating was in 'War of the Worlds ~ 1897,' Wells describes one of the Martian's primary weapons like this:
"...in some way they are able to generate an intense heat in a chamber of practically absolute non-conductivity. This intense heat they project in a parallel beam against any object they choose, by means of a polished parabolic mirror of unknown composition, much as the parabolic mirror of a lighthouse projects a beam of light... it is certain that a beam of heat is the essence of the matter. Heat, and invisible, instead of visible, light. Whatever is combustible flashes into flame at its touch, lead runs like water, it softens iron, cracks and melts glass, and when it falls upon water, incontinently that explodes into steam."
The atmosphere of Mars is 95.3% carbon-dioxide.
What he is describing is a CO2 laser. Coincidence?
Past that, I'm both constantly amazed and not. The generation before mine dreamed of things we have today (PC's, internet, VCR's, CD's, cell phones, GPS, etc.). However, I also realize from those fantasies of 'what if' by the older generation, subsequent generations take those ideas and say 'why not?' Then make it happen... That's really the amazing part. What if ideas everyone has. It's staggering what people accomplish to make dreams realities. That's constantly amazing to me. Not, in that I expect it.
K2