

But left and right aren’t absolute positions, they change in time. E.g. democrats now hold a lot of similar positions to what the republicans held in the 1980s (and also a lot of different ones).
Left and right are also a unidimensional approximation of a multidimensional value space… E.g. most people on the left disagree with nearly everything Marjorie Taylor Greene says, but they agree with her that the US should not be supporting Israel’s war on Iran.
There are also people on the left AND the right that oppose global economic liberalisation, but what is often called the “centre” supports it - clearly not a “middle” stance.
So how can you meaningfully define what is led and what is right, for the purpose of your reading?
That it also changes in time and is not absolute. And also, in many ways, that it does it does not exist (in the sense that the “centre” in one dimension might be correlated with extremes in another)