Is it hard to write a logical essay without scientific data?

I thought I could write essay generated chapter books, since that is the structure of how most of my outlines work but I’ve been out of school for 5 years and not sure I’m as good at innovating book content as I was when I was a university student. One major thing is citations, have not had to cite things since 2020.

Is it hard to write a logical essay without scientific data?
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