introduction/main.tex: Reword sentence about forward/inverse difficulty

The original was a bit too nested, so I've broken it into more
distinct sections.

diff --git a/src/introduction/main.tex b/src/introduction/main.tex
index a903fb4cc857decd046c8307c4d5d37f80a456e2..2f01da2d06220eec9af6e1f51267fe925e92a023 100644 (file)
--- a/src/introduction/main.tex
+++ b/src/introduction/main.tex
@@ -39,10 +39,10 @@ sequence for a particular protein, however, does not immediately shed
 light on the protein's role in the body, or even the protein's
 probable conformation.  Indeed, a protein's conformation is often
 vitally important in executing its biological tasks
-(\cref{fig:ligand-receptor}).  Unfortunately both predicting stable
-conformations of a given amino acid sequence and the inverse problem
-of finding sequences that form a given conformation have proven
-remarkably difficult.
+(\cref{fig:ligand-receptor}).  Unfortunately predicting a protein's
+stable conformations from it's amino acid sequence has proven to be
+remarkably difficult, as has the inverse problem of finding sequences
+that form a given conformation.
 %
 \nomenclature[text ]{DNA}{Deoxyribonucleic acid.}