diff --git a/opensym2017/content/01-introduction.tex b/opensym2017/content/01-introduction.tex
index 38e61da..b39dad3 100644
--- a/opensym2017/content/01-introduction.tex
+++ b/opensym2017/content/01-introduction.tex
@@ -28,13 +28,14 @@ unjustifiable expending of taxpayers' money.
 
 % TODO: ^ references
 
-Since 2009, the SPB Portal was having several technical issues. The
-original codebase was not being developed anymore, and there was a large
-amount of technical debt to overcome. The system was a modified version
-of an existing FOSS platform called
-OpenACS\footnote{\url{http://openacs.org}}, and the old SPB portal was
-not being updated anymore against the official OpenACS releases. In this
-scenario, the portal maintenance has become increasingly difficult.
+Since 2009, the SPB Portal was having several technical issues. The original
+codebase was not being developed anymore, also, there was a large amount of
+knowingly non-optimal or wrong design decisions to overcome (in other words,
+technical debt \cite{refactoring}). The system was a modified version of an
+existing FOSS platform called OpenACS \footnote{\url{http://openacs.org}}, and
+the old SPB portal was not being updated anymore against the official OpenACS
+releases. In this scenario, the portal maintenance has become increasingly
+difficult.
 
 After some events and meetings to collect requirements from the federal
 government and from the society, a new platform for the SPB Portal was
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