Hard and Soft SF - What's the Nature of Your Change?

We like to differentiate between science fiction and fantasy, yes, but then we carry the differentiation still further into "hard" versus "soft" SF.  Does the story depend upon the "hard" sciences of math and engineering?  Or does the story instead examine the more psychological aspect of the human condition?

Day 3: "The Magic" - Soft vs Hard SF - SF Tropes

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