To say that Lionsgate’s sci-fi film “Voyagers” never honors its true nature would be overstating the case and unfair to filmmaker well-intentioned Neil Burger’s latest directorial effort. But as an initially thoughtful, would-be intelligent sci-fi morality tale that loses its way, there is something to be said about the manner in which “Voyagers” undermines its considerate Aldous Huxley-ian contemplation of human nature in the name of thrills, entertaining audiences, and simple-minded messaging. Truthfully, the film is clearly aiming for a mix of both smarts and spectacle in the grand tradition of Nolan, Kubrick, and all the forebears of cinema who have managed to blend thought-provoking ideas with big-budget scale, but the movie never quite manages to get there despite an absorbing first act.