If we are not able to set a good hypothesis is, we need to learn the basic knowledge or additional related thritti. In order to do so we can set the hypothesis and hypothesis can be tested properly.
If we can not assume that good. We just need to learn the basics or more related theories. In order to enable us to test hypotheses clearly and accurately.
If we cannot assume good. We need to study the basic knowledge or theory that more relevant. In order to make assumptions we can clearly and can test the hypothesis is correct.