The scientific method consists of an objective means of coming to know how the real world works. Science deals with observable phenomena, a positivist view, with data obtained by objective means capable of replication.
Scientific knowledge remains tentative and incomplete.
Scientific knowledge in general never does deal with ultimate truths. Scientific research involves validating theoretical models and modifying theories. Further articulation of a theory results from the testing of research hypotheses against data and developing new explanations for observed results. The adjustment of a model occurs with a shift of theory resulting in a new theory replacing an old one, e.g., Darwinism replaced by the synthetic theory of evolution. In a more limited sense a scientific theory is a set of statements permitting prediction and explanation of phenomena.