Final semantic fixes, PDF recompilations, and README executive summaries for Papers 1-6

papers/project_paper_2_neuroscience/paper_2_neuroscience.log

@@ -1,4 +1,4 @@
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@@ -169,11 +169,11 @@ L3 programming layer <2024-01-22>
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-Output written on paper_2_neuroscience.pdf (2 pages, 137657 bytes).
+Output written on paper_2_neuroscience.pdf (2 pages, 139111 bytes).
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