In the methods and tools section, we discussed how to do an investigation and what tools were required. In the introduction, optical illusion was discussed and how the brain can trick you. An image was shown to make you aware of this. In the final case study assignment, a movie taken by a witness was provided for you to examine. A question was posed whether this movie was helpful. Below you can find an image of the aircraft in the movie (left) and an image of the provided aircraft (right). Some of you noticed that the movie did not, in fact, show the aircraft that was involved in the event. This was done on purpose, to make you aware that sometimes you are confronted with information that is not relevant to the investigation. Do you remember the warning we gave in the beginning?

In Quiz: Methods, some of you struggled with the questions: A hypothesis is…? Many of you chose: “A hypothesis is the explanation made on the basis of information gathered and the starting point for further investigation.” The problem is that during an investigation, you will receive a lot of information, but what you actually need is hard facts or evidence. As such, the correct answer is: “A hypothesis is an explanation made on the basis of limited evidence as a starting point for further investigation.”