No, I want to try to answer your question, when I know what it means. Are you asking me how I know that, unlike ants who behave without the benefit of cultural conditioning, humans behave toward situations with respect to the definitions they have of them, and that their definitions/interpretations of situations result both from their individual creativity and their social cultural conditioning (what I called "programming")?
Of course I don't know this in any absolute way, but I think it's consistent with more of the evidence. And I think this goes a bit toward answering the OP--"Must scientific knowledge be considered relative?" I would be very hesitant to consider scientific knowledge ABSOLUTE. And I am confident you would agree given that all scientific knowledge is provisional. Being a progressive institution its knowledge is--almost by definition-- subject to revision.