2. Why are we using those fragile prop engines again?
3. The entire Na'Vi battle strategy
2)Hover capability probably, though you think they would have at least created some sort of jet hover vehicle that could work almost as well as the props did.
3)Agreed.
The real question is what happens in 7 years when Earth finds out that some alien species "
Killing Human Beings! News at 10". Factoring in the few years to get the word around and the population motivated enough, and then the return trip including the further acceleration of space travel technology during this time period, I figure the Na'vi have anywhere from 15-20 years before the full might of Earth's military descend upon them and wipes them out, and then we just take all of the unobtanium anyways.
I'm perfectly fine with the idea of genetic memory in Assassin's Creed. I see no reason to whine about how impossible it is. Virtually every super high tech thing in sci-fi games and movies can't work, otherwise they'd exist today and be science fact. Faster than light travel anyone? Lightsabers? Laser guns? Hovercraft that are able to go faster than land vehicles?
1)Lightsabers are actually possible at the current time through use of ionized plasma/magnetic fields. Of course you would need to be hooked up to a large generator to power the dang thing, and you probably couldn't fight with them do to the magnetic fields interfering with each other and you losing plasma containment.
2)Laser guns fall in a similar category of "possible, but not practical". Currently the U.S. is working on a type of aircraft mounted laser that could deal substantial damage through use of a double pulse (the first ionizes the air to prevent refraction, then the second actually damages the target), but it's highly experimental currently and very prone to overheating if you fire more then one double-shot in a short period. So laser tanks are a much more probable thing then laser handguns.
3)Hovercraft can beat some land vehicles over certain types of terrain (namely swamp, ice, and sand), but generally at the point when a hover vehicle reaches speeds higher then those of a land based one we tend to call it an
aircraft.
4)Faster then light hyperspace like in Star Wars? Not possible. Faster then light like found in Star Trek is theoretically possible by cheating the laws of physics though (you aren't actually moving faster then light, your just bending space so every step you take counts as several in normal space). Of course to do so you would need to be able to manipulate negative mass (possible due to the known existence of negative energy, but probably doesn't exist normally), but it's technically possible to do.
A lot of the sci-fi stuff out there isn't impossible, or even improbable, it just isn't
practical. Even the "sci-fi stuff" that we can do now most of it would involve being hooked up to a big-ass generator just to power it, making handheld devices not practical; though if somebody ever comes up with a compact "super battery" then there is already a bunch of stuff out there in the sci-fi worlds that would become commonplace.
Dark Knight Rises!There's no way in hell he'd get the bomb far enough away to avoid serious damage to the city. It had like, 6 minutes left. Even if the blast radius is 6 miles, isn't that just the major destruction radius? Would still be a significant shockwave. Would still probably have a tidal wave from the displaced water.
Next, it's a fusion bomb. There's no radioactive decay to cause the "time limit" thing unless there's a fission primer, which would result in significant fallout (adding to the above problem!).
My brother and I were talking about this as well, trying to figure out just how fast the bat would need to be moving to make it out to the point where it wouldn't damage the city. We ended up coming up with a huge number like 1000 mph or something like that. It's almost as bad as Angels & Demons where they detonate that anti-matter bomb over Rome and everybody is fine. Not to mention the wave of gamma rays that would make most people fall over dead right there, and those who lived the initial blast would die extremely painfully over the next few days from radiation poisoning/cancer.
Lastly on the topic of DNA storage (ignore the first two panel rows):