8 Sci-Fi Movies Built On A Lie
4. Lucy
If 2014's Lucy was based on truth, Scarlett Johansson's Lucy Miller would likely have ended up dead by the end of the film's opening act.
At the start of Lucy, the titular character ends up being tricked into becoming a drug mule. After her boyfriend is shot and killed, Lucy has a packet of the CPH4 drug sewn into her stomach. When someone kicks Lucy in the stomach, that then leaks this drug into her system and allows her to access the full capacity of her brain - in addition to essentially gaining superpowers.
This is also, of course, lazily based on the notion that humans only ever use 10% of their brains.
In reality, we humans actually use far, far more than 10% of our brains. Different areas of the brain are reserved for different uses, such as storing old memories, for creative purposes, or even for sleeping. If, like in Lucy, someone was to miraculously be able to use 100% of their brain capacity all at once, the tragic result would be that that person would immediately fall into a coma and would have an extremely high chance of dying.
The other elephant in the room here, is that if Lucy Miller had an entire bag of high level drugs emptied into her system then she would have again been facing the Grim Reaper - this time due to a drug overdose.