add initial os3 excerpt

src/posts/2021/04/osss-introduction.md

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+---
+title: "Introducing the Objective-Subjective Scoring System"
+date: "2021-04-14"
+tags:
+- blog
+---
+
+It's difficult to fairly judge anything in a manner free from bias. It's even more difficult to do it for abstract and creative works such as literature or stories, as your personal enjoyment can greatly affect how you view the work and any flaws it might have. The **Objective-Subjective Scoring System (OS3)** attempts to remedy this issue by separating as much bias as possible.
+
+<!-- excerpt -->
+