“That which is accepted as knowledge today is sometimes discarded tomorrow”

Knowledge Question: In what ways do reason and sense perception change truth in the Natural Sciences?

    Sense perception provides more easily accepted proof for humans, and reason can help explain what sense perception shows, and changes in either can change “truth” (fact or belief accepted as true) in the natural sciences.    

         A Real life Example would be the journey to the current cell membrane theory.  In 1935, “truth” was the Davson and Danielli model, who theorized the plasma membrane was a lipid bilayer covered on both sides by a thin proteins layer.  However, in 1972, Singer and Nicolson proposed proteins were instead inserted throughout the bilayer, which they found due to advances in electron microscopy and the ability to culture and study cells in labs.

        Sense perception, (faculties of sight, smell, hearing, taste and touch, which the body perceives through an external stimulus), isn’t perfect.  With sight, for example, sense perception fails if  something’s too small (cells).  Sense perception influences reason (cause, explanation, or justification) within natural sciences (branch of science which deals with the physical world) because experiments require sense perception for observation, and reason to gain knowledge from the results.  This method works if humans can perceive what they’re observing, but when sense perception becomes contradictory (as with cells) a faulty sense perception can hinder reasoning, which creates an incorrect "truth.” As humanity advances, technology can extend sense perception, and such extension can change what the senses perceive, changing the reasoning, and changing "truth” in the natural sciences.