Too much thinking

How to be right and wrong at the same time.

So youngest son has been taking some tests in school. The paper seems to have been testing reasoning skills and problem solving... you know the sort of skills that require thinking to be applied. The scenario was a shop and the shop owner had installed security cameras. From the position of the camera the pupils had to say which people in the shop were in blind spots. For the first question he answered as he was expected to, but with the added comment in brackets explaining that you couldn't actually tell whether the camera could see people due to not being given the height and position of the shop shelving. Then having decided that the questions were flawed he simply wrote "See brackets as above". He was of course right. In a real situation you would have to take into account all the variables. If he was undertaking a scientific experiment, a military operation, designing a building - or installing actual cameras in an actual shop - this would be the right way to approach the problem. But in the hypothetical world of testing a child's ability to think like a robot, to give the answer that the educator has programmed you to give, to jump through the hoop, well then he would be marked as wrong. One day this ability to think outside the box will hopefully find a place in the world. But for now I have to find a way to help him navigate the system. Anybody got a map?