A hypothesis is a vital part of not only the scientific method but in experimenting, whether or not you are familiar with the method. A hypothesis is important, because by stating your perspective and percieving on the topic you are able to build on that, despite how much it may be wrong or how much it may be right. It's the first step to forming a final conclusion. With a hypothesis you can fully build and construct the final results and conclusion to any experiment or topic you are focusing on.
The reticular formation can be said to be a network of nuclei in the brainstem that wakes or alert us to a sharp reaction or occurence at a particular time.