Lucy is a (mostly) English-speaking, French-produced Sci-Fi (or fantasy, depending on your perspective,) action film, written and directed by Luc Besson, and staring Scarlett Johansson, Morgan Freeman, Amr Waked and Choi Min-sik.
Following the spirit of the film's theme, which is largely based on the ten percent brain myth, it is fair to say that Lucy, the film, uses just about 20 percent of its concept's potential. After an excellent opening, the plot quickly derails into the expected path of violence; one that counts on the audience’s inherent intelligence not surpassing the three to five percent range...
The result is a mess: those who came to see a bloody action movie, get their wish fulfilled, but may be distracted by dispersed shreds of philosophy and patched science; and those who were hoping for something deeper than a flesh wound, get scattered brain tissue instead. Regardless, Scarlett Johansson is fantastic and is able to bravely hold together a crumbling plot with a supporting hand from Morgan Freeman.
Lucy ends up being a disappointment given that Besson knew the ten percent brain usage is a myth, and could have, instead, tap into the film’s real potential. He could have made a psychological thriller based not on a well-abused myth and plenty of gun power, but rather on what we only now begin to realize we do not yet understand about the workings on the human mind, how it operates, how it grows, and how much more insight it can provide under watchful circumstances.