Viewers generally find 'Lucy' to be a thrilling blend of action and speculative science fiction, driven by Scarlett Johansson's compelling performance. The film's exploration of human potential through the use of 100% of the brain's capacity intrigues many, although it's noted for its lack of scientific accuracy and sometimes shallow storyline. The action sequences and special effects are praised, but some find the philosophical undertones and the ending somewhat forced or underwhelming.

👍 Scarlett Johansson's performance is a highlight.

👎 Scientific inaccuracies may frustrate some viewers.