diff --git a/core/hci/hci-summary.pdf b/core/hci/hci-summary.pdf
new file mode 100644
index 0000000..25141e3
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diff --git a/core/hci/hci-summary.tex b/core/hci/hci-summary.tex
index d6a94fb..c6a98fc 100644
--- a/core/hci/hci-summary.tex
+++ b/core/hci/hci-summary.tex
@@ -1,5 +1,6 @@
 \documentclass{article}
 
+\PassOptionsToPackage{skip=2pt}{parskip}
 \input{../../helpers.tex}
 
 \usepackage{lmodern}
@@ -9,6 +10,7 @@
 
 \begin{document}
 \startDocument
+\summaryspacing
 
 \vspace{1cm}
 \begin{center}
@@ -30,7 +32,7 @@
     HS2026, ETHZ
 
     \begin{Large}
-        Summary of the Script and Lectures
+        Summary of the course materials
     \end{Large}
 \end{center}
 
diff --git a/core/hci/parts/01_ucd/00_intro.tex b/core/hci/parts/01_ucd/00_intro.tex
index e69de29..59cf087 100644
--- a/core/hci/parts/01_ucd/00_intro.tex
+++ b/core/hci/parts/01_ucd/00_intro.tex
@@ -0,0 +1,16 @@
+\subsection{Introduction}
+To answer what User-Centred Design (UCD) is, we first need to establish what it \textit{isn't}:
+\begin{itemize}
+    \item UCD doesn't mean talking \textit{to} the users and asking what they want {\scriptsize (that's pretty much a user study)}
+    \item UCD doesn't mean testing the usability of the design in the end
+    \item UCD is not just for user interfaces or software {\scriptsize (it can also be for Programming Languages)}
+    \item UCD doesn't guarantee a perfect design {\scriptsize (duh)}
+\end{itemize}
+
+So, what is it then? It is characterized by:
+\begin{enumerate}
+    \item \bi{An early focus on users and tasks} {\scriptsize (get a psychology degree first)}
+    \item \bi{Empirical measurement} {\scriptsize (Come up with some sort of measurement of performance)}
+    \item \bi{Iterative Design} {\scriptsize (Identify and fix problems)}
+\end{enumerate}
+That all is very obvious and
diff --git a/core/hci/parts/01_ucd/01_design-process.tex b/core/hci/parts/01_ucd/01_design-process.tex
index e69de29..99bc182 100644
--- a/core/hci/parts/01_ucd/01_design-process.tex
+++ b/core/hci/parts/01_ucd/01_design-process.tex
@@ -0,0 +1 @@
+\subsection{Design Process}
diff --git a/latex-helpers b/latex-helpers
index c1cec58..b4f49af 160000
--- a/latex-helpers
+++ b/latex-helpers
@@ -1 +1 @@
-Subproject commit c1cec5894c0141ac792d1d91c5e5e6755ffd232d
+Subproject commit b4f49af00e9d1cd390173a6b653821bdd204b0f2