Although Limitless and Lucy have totally different story-lines, they still share a common theme. That is in boosting or enhancing the human mind and brain far beyond normal.
https://www.thrillist.com/entertainment/nation/limitless-movie-review
https://www.rogerebert.com/reviews/limitless-2011
https://en.wikipedia.org/wiki/Limitless_(2011_film)#Production
https://en.wikipedia.org/wiki/Lucy_(2014_film)#Production , https://www.youtube.com/watch?v=egBRU_EJhOI
https://www.theatlantic.com/entertainment/archive/2014/07/life-is-futile-so-heres-what-to-do-with-it-according-to-lucy-a-spoilereview (This is an interesting Sci-Fi story about taking a person's mind up to greater heights, but not everyone gets it.)
Of course many dismissed the movies Limitless and Lucy for being too out there. A good Sci-Fi story is about pushing the limits and reaching the fringe.
https://www.rogerebert.com/reviews/lucy-2014 , https://film-vault.fandom.com/wiki/Lucy
