Barthes meant that a piece of text is like a tangled ball of threads.
The thread needs to be unravelled
Once the thread is unravelled,we can encounter a wide range of potential meanings
We can start by looking at a narrative from one point of view in one way and create a meaning for the text
However,if you continue unravelling the narrative from a different angle then you can see the narrative from a different point of view and create a different meaning for the text.