The real issue with this film

I enjoyed it and came here to comments and there are like a million people trying to explain the "no questions" paradox. They are missing the gorilla in the middle of the room. Eight people were screened for this prestigious position and put in this room. People start smashing the lights setting off the sprinklers. What are they thinking? It's a job entrance exam, not an "escape the room" game. Obviously the solution is not going to be smashing out all the lights and grabbing the guards gun and shooting the other contestants.
Personally, my thought, as soon as they were given their instructions, before I knew anything of the ending, was to just wait out the time until the invictualator came back and give him a simple yes or no at random.
Somehow, I think people applying for this job should be at least smart enough to figure that out.