Post-Structuralism & Structuralism

I like that the texts starts off right away by accusing post-structuralism to be a rebellious form of structuralism. The two differ in that structuralism deals with the way in which humans make interpretations, which makes it more abstract, and post structuralism “maintains that the consequences of this belief are that we enter a universe of radical uncertainty, since we can have no access to any fixed landmark which is beyond linguistic processing, and hence we have no certain standard by which to measure anything.” ( Peter Barry pg 61)

It almost seems as if both structuralism and post-structuralism need to coincide with each other, even though it may be hard to choose between the two. Structuralism is linked to scientific method, whereas post-structuralism states that “there are no facts, only interpretations.”(pg 63)  My question now is how do these two contradict common sense truths that humans already have developed over time? Or is there even such a thing as “truth”? For example, how might is contradict to the language? Language is arbitrary and is always open to change, yet there are still some things that can be read over time that have a specific meaning, or “truth” that may not be open to interpretation. How might these two work together in deconstructing a text? Do they both contribute to the text unraveling of the text?

I’m still quite on the fence between the two. I’m not really sure if I agree with one or the other. I just keeping thinking that post-structuralism is so adamant on the universe not having one set truth, but that sentence in itself is one set truth. It’s telling us there are many truths within language that is up to each person to find, but just the fact that it’s saying that so firmly and with no doubts is a very “structuralist” approach. I’m not sure why post-structuralism doesn’t want us to trust language. Humans have created language in order to communicate and build trust, so I’m not sure why we’re not supposed to trust signs, signifier and signified as a useful means of finding meaning.