What are the strengths of ethical relativism and objectivism?
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Indeed both have their strengths, as already is remarked in classical Buddhism, when it says in
Tantra Buddhism: 'Absolute Knowledge ([objectivism] and Relative Knowledge [relativism] together
constitute the supreme knowledge.'
The strength of objectivism is being conservative and thus preventing mistakes. Another of it
strengths is authoritarian education. Although education in theory is always indoctrination, passing
knowledge can't be missed in the struggle for survival.
But in the end it is death to stay within the same truth. That means linear progress or seen from
space standstill. Mind that death in nature can't be missed.
A strength of relativism is that it compensates absolutism (or objectivism). It acknowledges every
system of thought and as such realizes that there can be limitless truths. It remains critical towards
any truth, and therefore seen in terms of evolution it keeps things going.
It means life, i.e. acceleration into new truths.
See it as a kind of Yin and Yang. Inseparable, both necessary, together forming a unity.