<P> Though there are diverse models for the scientific method available , in general there is a continuous process that includes observations about the natural world . People are naturally inquisitive , so they often come up with questions about things they see or hear , and they often develop ideas or hypotheses about why things are the way they are . The best hypotheses lead to predictions that can be tested in various ways . The most conclusive testing of hypotheses comes from reasoning based on carefully controlled experimental data . Depending on how well additional tests match the predictions , the original hypothesis may require refinement , alteration , expansion or even rejection . If a particular hypothesis becomes very well supported , a general theory may be developed . </P>
in the process of science hypotheses lead most directly to
predictions that can be tested in various ways