There's a moment in Luc Besson's “Lucy” when Scarlett Johansson's title character has cracked the code of existence like a videogame cheat. She goes Rust Cohle on who are appropriately the smartest minds of the world, explaining how numbers are just one of many false constructs that humans use to bring sense to a life of chaos. Which is amusing, since “Lucy” itself is all math—one beautiful superstar (a game Johansson), one Morgan Freeman (Morgan Freeman), a chase, some fights, superpowers, a brief moment of transcendence, gorgeous colors, all wrapped up in an 80-minute bow. Merely the presence of these elements are a delight, nevermind the inconsistently lyrical manner in which Besson combines them. It's basically the perfect summer movie, because it's designed to be.