Good talent, but challenging speculation

Rating: Null/10 (28 July 2014)

I like Scarlett Johansson, Morgan Freeman and admire several films of writer / director Luc Besson (The 5th Element, The Transporter, District 13) ... but this movie didn't do it for me.
The science aspect, which I usually tend to ignore, bothered me and felt like too much of a stretch. It just felt strange - If we use 100% of our brains, we become like gods?
What happens if a cat or a chicken uses 100% of it's brain? Boggles the mind.
The movie "Limitless", which also speculated on using near 100% of the brain, felt more believable and interesting. As the main character increased in power, there were limitations and trade-offs. As such, there was a compelling challenge and catharsis involved.
This movie seemed more like a simple speculation embedded in a weak story.