The positives: It's beautifully photographed and the depiction of the wormhole is spectacular. Performances are delivered with conviction - Anne Hathaway and Jessica Chastain are particularly effective.

The negatives: It's very long - not necessarily a problem - but if you make a 3 hour movie it has to sustain interest (and in this case tension) for that period, which, unfortunately, it doesn't. 2 hours in, I really didn't care if mankind survived. Not helped by Mathew McConaughey's slow, mumbled delivery. I guess he was going for intensity, but it doesn't come across that way.

The absurdity: The robots are ridiculous - like something out of a 60s Sci-fi serial. The idea that a more advanced society would create something like that is just plain ludicrous. And the depiction of the inside of a black hole and how it helps solve the puzzle is unbelievable in the extreme. To me, it seems like Nolan had no idea how to solve the dilemma he had set. Sure, it's Sci-fi, but unless it's done for comic effect, it still needs at least a veneer of plausibility. But not here.

One of those films that has an over-inflated rating and reputation, which may well be revised by posterity.