I’m not sure about the use of “dualism” and “dualities” – I wonder if “dichotomy” would be a better word? I think dichotomies can be useful to understand something – such as rhizomatic and arborescent for example. In reality, as we know, nothing is just one thing and not another, but being able to understand something as a bit rhixomatic or fairly arborescent can be a useful. Sorry, am not being very coherent here!