"Learning's always a painful process".

Rating: 7/10 (12 October 2016)

I liked the sci-fi aspects of this story but thought it got a little too 'matrixy' toward the end, especially with the flash backward through time that Lucy (Scarlett Johansson) experiences in the latter part of the film. I can understand why a lot of folks consider the ten percent myth to be factual; when I was a kid in grade school over a half century ago, I recall teachers telling us the same thing. Only back then the number was just five percent. I guess inflation has brought the fallacy up a notch.
Actually if you think about it, some of the ten percent business has merit if one considers that you can continually learn more and more throughout a lifetime by reading and studying, thereby accumulating a lot more knowledge than you started out with. So in one's youth then, the limitation is strictly based on the amount of time one has been around. That's why I thought the introduction of the time element - 'Time is the only unit of measure' - was a compelling one.
As far as the story goes, some of it's logic falls apart at the finale as far as that gun battle between the authorities and the Korean gangsters. It was already established that Lucy could control the behavior of others in earlier scenes, so there was no need for all that carnage except to satisfy the gore and violence fans. And if she could defy gravity during the initial hit of CPH4 in her system, why remain grounded for the rest of the story?