Final answer:
The term ONEitis is not formally defined in the context but may correlate with the focus on a single truth or reality, mirroring post-modernist perspectives on the subjective nature of reality. Discussions around the existence of multiple realities and the human capacity for objective knowledge reflect on the understanding that we perceive and interpret varied experiences and beliefs, rather than definitive, multiple realities.
Step-by-step explanation:
The term ONEitis is not directly defined in the provided text. However, it seems to be a play on the word monotheism, which refers to the belief in one single God. In post-modernist thinking, as outlined in the texts from LibreTexts, there is a discussion about the existence of multiple realities, which may be an analogue to the ONEitis concept, suggesting an obsession with a singular truth or reality. The dialogue about whether there is one reality and different views of it, or whether multiple realities exist at the same time, reflects the post-modernist critique of objective knowledge and absolute certainty.
According to post-modernism, if humans cannot ascertain one ultimate reality (reality 1) with objective knowledge, all discussions about reality are in fact about perceived reality (reality 3). Hence, since humans can only perceive and interpret, multiple perceived realities (realities 3) exist based on our subjective experiences and beliefs. The text suggests a more nuanced approach—acknowledging different experiences and beliefs about what is real without claiming the existence of multiple ontological realities.