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diff --git a/scientific_software_management/reset_system.sh b/scientific_software_management/reset_system.sh
new file mode 100644
index 0000000000000000000000000000000000000000..23d558c8689708553599eb40638a49ad217b9c43
--- /dev/null
+++ b/scientific_software_management/reset_system.sh
@@ -0,0 +1,9 @@
+# reset the system
+rm -rf /var/db/repos/chymeric/
+emerge -C samri
+eix-sync
+
+# reset the overlay repo
+cd overlay/location/with/Chymera/account
+git reset --hard commitwhichwasbeforethepull
+git push -f origin master
diff --git a/scientific_software_management/slides.pdf b/scientific_software_management/slides.pdf
index 32ac1abe92f234fe55d2963e7ace65d527912ef7..e8d008952d02214780eac5a4420e121d97fd9137 100644
Binary files a/scientific_software_management/slides.pdf and b/scientific_software_management/slides.pdf differ
diff --git a/scientific_software_management/slides.tex b/scientific_software_management/slides.tex
index 6aeb01bef9d62b737ef8b29e33b8de48864d96bf..928bda83d84ce6dc32b271d414a2df830ffe4eb3 100644
--- a/scientific_software_management/slides.tex
+++ b/scientific_software_management/slides.tex
@@ -19,14 +19,14 @@
 			\begin{frame}{SSH}
 				Linux and MacOS:
 				\begin{itemize}
-					\item check that you can run
+					\item Check that you can run:
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|ssh YOURUSER@130.60.24.66|
 				\end{itemize}
 				Windows:
 				\begin{itemize}
-					\item Download and launch “Git for Windows” from \textcolor{lg}{\href{https://git-for-windows.github.io}{\texttt{git-for-windows.github.io}}}
-					\item check that you can run
+					\item Download and launch “Git for Windows” from \textcolor{lg}{\href{https://git-for-windows.github.io}{\texttt{git-for-windows.github.io}}}.
+					\item Check that you can run:
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|ssh YOURUSER@130.60.24.66|
 				\end{itemize}
@@ -34,7 +34,7 @@
 			\begin{frame}{Command Line Text Editor}
 				Usable via SSH and ubiquitous. There are many alternatives, but here we use \textcolor{lg}{\texttt{nano}}:
 				\begin{itemize}
-					\item Open file
+					\item Open file:
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|nano file|
 					\item Save via: \keys{Ctrl + c}
@@ -53,7 +53,7 @@
 
 				GitHub is a \textbf{social coding platform} providing free accounts:
 				\begin{itemize}
-					\item Register under \textcolor{lg}{\href{https://github.com}{\texttt{github.com}}}
+					\item Register under \textcolor{lg}{\href{https://github.com}{\texttt{github.com}}}.
 					\item Use a password which you can remember.
 				\end{itemize}
 			\end{frame}
@@ -68,12 +68,12 @@
 				A package is a software format which is (easily):
 				\begin{multicols}{2}
 				\begin{itemize}
-					\item distributable
-					\item integrated
-					\item testable
-					\item updateable
-					\item uninstallable
-					\item understandable
+					\item Distributable
+					\item Integrated
+					\item Testable
+					\item Updateable
+					\item Uninstallable
+					\item Understandable
 				\end{itemize}
 				\end{multicols}
 			\end{frame}
@@ -81,10 +81,10 @@
 				\begin{minipage}{0.44\textwidth}
 					Packages interact in complex and nontrivial manners:
 					\begin{itemize}
-						\item version-dependent behaviour
-						\item optional features
-						\item incompatibilities
-						\item static/dynamic linking
+						\item Version-dependent behaviour
+						\item Optional features
+						\item Incompatibilities
+						\item Static/dynamic linking
 					\end{itemize}
 				\end{minipage}
 				\begin{minipage}{0.55\textwidth}
@@ -209,7 +209,7 @@
 					You can package your python software by writing \textbf{one short} file.
 						\begin{itemize}
 							\item Python provides its own limited package management, e.g. via \textcolor{lg}{\href{https://packaging.python.org/distributing/}{\texttt{setuptools}}}.
-							\item Package metadata saved in \texttt{setup.py}, e.g. \textcolor{lg}{\href{https://github.com/IBT-FMI/SAMRI/blob/master/setup.py}{\texttt{SAMRI/setup.py}}}
+							\item Package metadata saved in \texttt{setup.py}, e.g. \textcolor{lg}{\href{https://github.com/IBT-FMI/SAMRI/blob/master/setup.py}{\texttt{SAMRI/setup.py}}}.
 						\end{itemize}
 					\column{.45\linewidth}
 						\inputminted[bgcolor=tlg,fontsize=\Tiny,tabsize=4]{python}{samri/setup.py}
@@ -220,8 +220,8 @@
 					\column{.55\linewidth}
 					A Gentoo package is \textbf{one short} file.
 						\begin{itemize}
-							\item regardless of the programming language
-							\item can automatically interpret information contained in the package, e.g. in \textcolor{lg}{\texttt{setup.py}}
+							\item Regardless of the programming language
+							\item Can automatically interpret information contained in the package, e.g. in \textcolor{lg}{\texttt{setup.py}}
 						\end{itemize}
 					\column{.47\linewidth}
 						\vspace{-3em}
@@ -249,21 +249,21 @@
 		\subsection{Put what you have learned into practice, and start typing...}
 			\begin{frame}{A Few Basic Gentoo Commands}
 				\begin{itemize}
-					\item check available package names, versions, and details
+					\item Check available package names, versions, and details.
 					\vspace{-0.6em}
-					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|eix nibabel|
-					\item see package dependencies
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|eix -v nibabel|
+					\item See package dependencies.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|equery g nibabel|
-					\item see what packages depend on a said package
+					\item See what packages depend on a said package.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|equery d nibabel|
-					\item see files installed by package
+					\item See files installed by package.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|equery f nibabel|
-					\item try to install a new package
+					\item Try to install a new package.
 					\vspace{-0.6em}
-					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|emerge -p nibabel|
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|emerge -p psychopy|
 				\end{itemize}
 			\end{frame}
 			\begin{frame}{Reproduce a Scientific Article}
@@ -271,17 +271,17 @@
 				\begin{itemize}
 					\item Get the source code for brand-new articles:
 					\begin{itemize}
-						\item Work-in-progress (reexecution time \SI{\approx 3}{\second})
+						\item Work-in-progress (reexecution time \SI{\approx 2}{\minute})
 						\vspace{-0.6em}
 						\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|git clone https://gitlab.com/Chymera/nvcz.git |
-						\item Preprint (reexecution time \SI{\approx 2}{\minute})
+						\item Preprint (reexecution time \SI{\approx 11}{\minute})
 						\vspace{-0.6em}
 						\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|git clone https://bitbucket.org/TheChymera/irsabi.git |
 					\end{itemize}
-					\item Switch to article directory
+					\item Switch to article directory.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|cd nvcz|
-					\item Attempt to reexecute
+					\item Attempt to reexecute.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|./compile.sh|
 					%\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|git chechout 28b5d2d1|
@@ -323,12 +323,12 @@
 			\begin{frame}{Transparency means less work for you!}
 				You could write the following files from scratch, but you can also reuse analogous files from existing packages.
 				\begin{itemize}
-					\item Copy a metadata file from a Python package
+					\item Copy a metadata file from a Python package.
 					\vspace{-0.6em}
-					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|cp /usr/portage/sci-libs/nibabel/metadata.xml .|
-					\item Copy an ebuild file from a Python package
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|cp /usr/portage/dev-python/astropy/metadata.xml .|
+					\item Copy an ebuild file from a Python package.
 					\vspace{-0.6em}
-					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|cp /usr/portage/sci-libs/nibabel/*2.5.1.ebuild samri-0.4.ebuild|
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|cp /usr/portage/dev-python/astropy/*2.0.1.ebuild samri-0.4.ebuild|
 				\end{itemize}
 			\end{frame}
 			\begin{frame}{Write a Package Atom --- The Metadata File}
@@ -352,10 +352,10 @@
 			\end{frame}
 			\begin{frame}{Write a Package Atom --- Finishing Touches}
 				\begin{itemize}
-					\item Not all packages are perfect. Append the following to the ebuild.
+					\item Not all packages are perfect. Append the following to the ebuild:
 					\vspace{-0.6em}
 					\inputminted[bgcolor=tlg,fontsize=\scriptsize,tabsize=4,firstline=49,lastline=49]{bash}{samri/samri-0.4.ebuild}
-					\item Check your work.
+					\item Check your work. Minor formatting differences (e.g. indents) are not critical.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|wget https://thealternative.ch/ssm/samri/samri-0.4.ebuild -P ~|
 					\vspace{-3.1em}
@@ -368,7 +368,10 @@
 			\end{frame}
 			\begin{frame}{Social Coding --- Upload Your Package for Reuse}
 				\begin{itemize}
-					\item Quality Control.
+					\item Download the data and make git aware of your files.
+					\vspace{-0.6em}
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|ebuild samri-0.4.ebuild manifest && git add .|
+					\item Run a quality check.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|repoman full|
 					\item Record and publish your work in version control.
@@ -383,13 +386,13 @@
 			\end{frame}
 			\begin{frame}{Use Your Work}
 				\begin{itemize}
-					\item Package index update (done by the superuser).
+					\item Update the package index (as superuser).
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|eix-sync|
 					\item Try out the install command yourself.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|emerge -pv samri|
-					\item Install (done by the superuser).
+					\item Install (as superuser).
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|emerge -v samri|
 				\end{itemize}
@@ -401,7 +404,7 @@
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|cd ~/nvcz|
 					\item Compile.
 					\vspace{-0.6em}
-					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|./compile|
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|./compile.sh|
 					\item Log out from SSH: \keys{Ctrl + d}
 					\item Get the document locally.
 					\vspace{-0.6em}
@@ -418,15 +421,42 @@
 					\item Automatically adjust the t-statistic threshold for the entire document.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}:grep -rlI 3\.5 | xargs sed -i -e "s/3.5/3.0/g":
-					\item Visualize what you have changed.
+					\item Clean up trace files and visualize what you have changed.
 					\vspace{-0.6em}
-					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|git diff|
+					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|./cleanup.sh && git diff|
 					\item Compile, log out.
 					\item Get the document locally.
 					\vspace{-0.6em}
 					\mint[bgcolor=tlg,fontsize=\footnotesize]{bash}|scp YOURUSER@130.60.24.66:nvcz/article.pdf newarticle.pdf|
 				\end{itemize}
 			\end{frame}
+			\begin{frame}{Results}
+				You have:
+				\begin{itemize}
+					\item Packaged a new piece of scientific software, now automatically installable:
+					\begin{itemize}
+						\item By anybody else
+						\item By you on any machine
+					\end{itemize}
+					\item Updated data analysis visualizations in a reproducible article.
+					\begin{itemize}
+						\item It's that easy to contribute to well-organized research!
+					\end{itemize}
+				\end{itemize}
+				\vspace{-.5em}
+				\begin{columns}
+					\column{.5\linewidth}
+						\begin{figure}
+						\centering
+							\includegraphics[width=0.52\textwidth]{img/fig_old.png}
+						\end{figure}
+					\column{.5\linewidth}
+						\begin{figure}
+							\centering
+							\includegraphics[width=0.52\textwidth]{img/fig_new.png}
+						\end{figure}
+				\end{columns}
+			\end{frame}
 
 
 	\section{Meta}