We can test and observe how water boils at 100 degrees Celsius at sea level time and again. That is true empiricism and the spirit of the scientific method. Where we have veered off the path of truth is to deduce things that we have not been able to directly test and observe the cause and effect relationships in our haste and yearning for knowing and mastery of reality. It’s enabled a certain hubris and conceit for a few hundred years, but now human knowledge is rapidly becoming an untenable shambles of dogma and belief increasingly path dependent upon what theories prevalence is favoured. This is not the path to Truth.