Simple and well acted, it has tension enough to knot the stomach.

It was OK. I don't see why everyone loves it so much. It wasn't very smart or deep or well-directed.

There is, somehow, an interesting story here, as well as some good acting. There are also some good scenes

While it is a pity that the story wasn't told with more visual finesse, this is trivial compared to our real-world problems. It takes a good movie to put that into perspective.