Hollywood's over-the-top effects are often far-fetched and unbelievable. How much do you know about impossible movie technology? Test your knowledge of ridiculous fictional science by taking this quiz.
But cloaking devices would have to hide everything, from visual clues to heat signatures.
When teleporters malfunction, they send people into terrifying limbo.
The concept might not be impossible, but we certainly haven't figured it out yet.
The sonic screwdriver is mainly a tool but has also been used as a weapon.
Freezing people for future purposes is currently an iffy technology.
Flying cars are still fictional, but the technology is emerging .
Somehow this machine docks with the engines facing backward.
Current technologies struggle just to make robots walk on uneven terrain, much less hunt people.
The speeder bikes hovered above the forest floor and zipped along at breakneck speeds.
Using bodies for power is a flawed concept.
The real-time mapping drones aren't really that useful, but the special effects are cool.
To date, there's no way to make an invisible shield that fends off various weapons.
Current artificial-intelligence technologies are rudimentary compared to J.A.R.V.I.S.
The whole concept of the PASIV device in "Inception" seems confusing and creepy.
With one push of a button, the device erases classified deeds from witnesses' minds.
Time travel may require all the power of the sun. Unless physicists find a workaround, theoretical time travel will guzzle too much power to be useful.
An open hole that lets in bacteria and viruses by the billions seems like a quick way to die.
People are almost instantly healed of any physical problem you can imagine.
The Mr. Fusion produces gigawatts of power and runs on just about any fuel, including banana peels.
Ray guns, or laser-gun sidearms, aren't quite a reality, although the U.S. government is slowly installing versions on large vehicles.
A generation ship would act as an ark of sorts, but resources like food and water would become a problem.
You could summon a ride, but of course the off-duty light will be on.
Who doesn't wish light sabers were a reality?
Shoes that tie themselves would be helpful for parents of toddlers around the world.
The consciousness-to-digital storage concept isn't a reality … yet.
The point-of-view gun allows foes to see an argument from your perspective and ends conflicts.
It helps identify and track dangerous foes as well as friends.
The large virtual-reality screens appear throughout "Minority Report."
Kids have been clamoring for scientists to build hoverboards in real life ever since.
Exoskeletons do exist, but not ones that fly and do the other incredible feats in "Iron Man."