For a film with no budget wasn't bad. Not taking that into account, it was a bit simplistic in a complex way. Let me explain that. Yes the physics concept behind the idea is complex but if you get that then really the whole thing is just literally in some way the same thing over and over again. The story is quite basic in facts. So as much as I like the visual representation of a physics concep, I would have liked more story. I would have liked more background, know who the girl is, how she got enrolled, was it volontary like we finally learn was the casefor the people in the cube or was she forced into it? Also does she know who she is?
As for the presence of Sir Ian, frankly, him or another actor wouldn't make much difference for the time he is actually on screen.
As for the presence of Sir Ian, frankly, him or another actor wouldn't make much difference for the time he is actually on screen.