OK, let's start by saying I'm full of admiration for film makers and the work involved in putting together something like this. But it was just too long, too convoluted and too lacking in empathy for me.

To start with, why is there a constant soundtrack of electronic lift music? And why is it necessary to add explosion sound effects every time someone mentions "bomb" or "atomic"? And stars every time "universe" or "gravity" are mentioned? In combination with the usual muffled speech, I ended up straining to catch the dialogue.

Secondly, so many names are mentioned, it becomes near impossible to follow the last hour or so of the movie, during the hearing/tribunal, shot alternately in b&w and colour. I couldn't remember which came first historically, and gave up trying to keep track.

I didn't empathise at all with Oppenheimer. In fact, he seems to have been as bit of a pain. Emily Blunt did her best as his wife, bless her. The actors trying to appear like physicists looked a bit uncomfortable.

I would suggest watching this movie until the bomb test, then going for an ice cream and returning for the last 10 minutes. You won't have missed anything!