I like Science Fiction. If I read fiction that is the most common kind, although I have been reading a lot of funny fantasy, like Christopher Moore. But in movies and TV I often see the science get screwed up by the writers for no good reason. A science adviser for a movie said in an interview that the story is always first. Still, sometimes it would not take a big change to get the science right too.
It is OK to have transporters and light sabers, as long as you don't try to explain them. It is just the future.
On Star Trek TNG there was a scene where a phaser rifle was tested and found to produce 1.05 megajoules per second. (First, rifle refers to spiral grooves in the barrel to produce spin on the projectile, but that could be an archaic word, so I don't mind.) But Joule is unit of energy. Joules per second is power, and it has a name: Watts.
A movie is coming out called Transcendence, where the character's mind is uploaded into a computer. (The older Lawn Mower Man movies had a related idea.) When I say this is impossible, people usually say, "Not yet!" but we are so far from it that it is like if an ancient Greek philosopher noticed sparks after rubbing a cat's fur, and then predicted cell phones.
We don't know how memory works.
We don't fully understand why we sleep.
We don't understand synesthesia, hallucinations, epilepsy, and many other brain problems.
We do know that small amounts of hormones and other chemicals can have drastic effects on personality and brain function. We don't understand how, in most cases.
The biggest problem: Getting the information out of the brain. Scientists put sensors on the outside of the head and measure minute electrical fields. The resolution is not good. As well as we understand the brain, it would require microscopic resolution just to map out the dendrites and connections in the brain, and even that does not seem to be enough to describe the function.
We understand everything about how a computer works. Yet nobody can put a grid of sensors on the outside of a computer and extract the information inside. All the data and address lines' leaked signals would mix into a total mess. It would be like taking all the letters (or even words, or even sentences) on the pages of a book and dumping them in a bucket. The plot is lost.
When English majors write about science for the media, they leave out details.
In stories about reconstructing dreams from brain waves, they leave out the detail that this required hours of monitoring the subjects brain waves while the subject saw thousands of images, and that the information gained would not work for anyone but that subject, and success probably would degrade with time as the subject's brain and memories changed.
I wish science fiction would let the advisers suggest ways to slightly modify the story to make the science right, because people think they are learning science.
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