The hope in science is that investigators, using a combination of insight, intuition, knowledge and observation, will think of possible new truths that can be successfully and repeatedly verified and will also be of value . Scientific value usually relates to discovering powerful new truths that help us understand many phenomena or solve long-standing puzzles that we have faced. The value may come from applications or from enhancing our ability to predict or control events or parts of our world. If you list hypotheses that are quite common or ordinary ideas among teachers, you probably won't have to explain their meaning in any great detail. If they are highly specialized, I may need some help understanding what they are about.
Humans can construct ideas with great speed.
Gathering evidence to support the truth of an idea is a slow, arduous process. So, naturally, we need to select the ideas we are going to research with care. We need to have some reason to think that gathering evidence about the hypothesis is worth doing. Therefore, secondly, you need to explain why you take the idea to be worth spending time and effort on . Sometimes, what is generally taken as obvious is worth studying because an investigator suspects the idea is really false.