diff --git a/doc/2014-12-18_python-meetup/Makefile b/doc/2014-12-18_python-meetup/Makefile
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+all: main.pdf
+
+main.pdf:	main.tex
+	pdflatex -interaction batchmode -shell-escape main.tex 
+	pdflatex -interaction batchmode -shell-escape main.tex 
+
+check:
+	aspell -l en -t -c main.tex
+
+show:
+	evince main.pdf
+
+clean:
+	rm -f main.aux main.log main.out main.pdf main.aux main.bbl main.blg main.nav main.snm main.toc main.fdb_latexmk
diff --git a/doc/2014-12-18_python-meetup/images/sigbovik.png b/doc/2014-12-18_python-meetup/images/sigbovik.png
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diff --git a/doc/2014-12-18_python-meetup/main.tex b/doc/2014-12-18_python-meetup/main.tex
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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%  This Beamer template was created by Cameron Bracken.
+%%  Anyone can freely use or modify it for any purpose
+%%  without attribution.
+%%
+%%  Last Modified: January 9, 2009
+%%
+
+\documentclass[xcolor=x11names,compress]{beamer}
+
+%% General document %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\usepackage{graphicx}
+\usepackage{tikz}
+\usetikzlibrary{lindenmayersystems}
+\usepackage[utf8]{inputenc}
+\usepackage{verbatim}
+\usepackage{pifont}
+\usepackage{mathrsfs}
+\usepackage{minted}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Code snippets
+\newminted{python}{fontsize=\scriptsize, 
+		   framesep=3mm}
+
+%% Beamer Layout %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\useoutertheme[subsection=false,shadow]{miniframes}
+\useinnertheme{default}
+\usefonttheme{serif}
+\usepackage{palatino}
+
+\setbeamerfont{title like}{shape=\scshape}
+\setbeamerfont{frametitle}{shape=\scshape}
+
+\setbeamercolor*{lower separation line head}{bg=DeepSkyBlue4}
+\setbeamercolor*{normal text}{fg=black,bg=white}
+\setbeamercolor*{alerted text}{fg=red}
+\setbeamercolor*{example text}{fg=black}
+\setbeamercolor*{structure}{fg=black}
+
+\setbeamercolor*{palette tertiary}{fg=black,bg=black!10}
+\setbeamercolor*{palette quaternary}{fg=black,bg=black!10}
+
+\renewcommand{\(}{\begin{columns}}
+\renewcommand{\)}{\end{columns}}
+\newcommand{\<}[1]{\begin{column}{#1}}
+\renewcommand{\>}{\end{column}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\setbeamertemplate{caption}[numbered]       % Numbered figures
+\setbeamertemplate{navigation symbols}{}    % No navigation footer
+%\setbeamertemplate{footline}[page number]
+
+\begin{document}
+
+% Code snippets
+\defverbatim[colored]\codeFactorial{
+\begin{pythoncode}
+
+def factorial(n):
+    """
+    Returns the factorial of n
+    (int -> int)
+
+    >>> factorial(2)
+    2
+    >>> factorial(3)
+    6
+    """
+    if n:
+        return n*factorial(n-1)
+    else:
+        return 1
+\end{pythoncode}
+}
+
+\defverbatim[colored]\codeFactorialTarget{
+\begin{pythoncode*}{fontsize=\huge}
+@UTBP
+def factorial(n):
+    """
+    factorial(0) == 1
+    factorial(1) == 1
+    factorial(2) == 2
+    factorial(3) == 6
+    """
+\end{pythoncode*}
+}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}
+    \title{Programación basada en pruebas unitarias}
+\author{Miguel Lechón} 
+\date{28 de diciembre de 2014}
+\titlepage
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%\section*{\scshape Outline}
+%\begin{frame}{Outline of the presentation}
+%\tableofcontents[hideallsubsections]
+%\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section{\scshape Introducción}
+\subsection{SIGBOVIK}
+\begin{frame}{Contexto -- SigBOVIK}
+    \begin{figure}[t]
+        \centering
+        \includegraphics[width=1.0\textwidth]{images/sigbovik.png}
+    \end{figure}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Yo}
+\begin{frame}{Yo}
+    \frametitle{Contexto -- Yo}
+    \begin{itemize}
+        \item Informático \pause
+        \item Programador \textcolor{red}{sin código en producción} \pause
+        \item Administrador de sistemas \textcolor{red}{mediocre} \pause
+        \item Ex-estudiante de doctorado \textcolor{red}{sin doctorado} \pause
+        \item Actualmente, \textcolor{blue}{ama de casa}
+    \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Motivación}
+\begin{frame}{Motivación}
+    ¿En qué consiste programar?
+    \begin{columns}
+        \begin{column}{.5\linewidth}
+        \begin{block}
+            \codeFactorial
+        \end{block}
+        \end{column}
+        \begin{column}{.5\linewidth}
+            \begin{itemize}\itemsep25pt \pause
+                \item Explicar qué se espera del código\pause
+                \item Explicarlo otra vez, por si las moscas\pause
+                \item Explicarlo de nuevo, esta vez para el ordenador\pause
+            \end{itemize}
+        \end{column}
+    \end{columns}
+    Uno no aprende a programar para trabajar más de la cuenta.
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Objetivo}
+\begin{frame}{Objetivo}
+    \pause
+    \codeFactorialTarget
+\end{frame}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{But Why?}
+\begin{frame}{But Why?}
+    \begin{itemize}
+        \item I thought some of the criticism might graze our research
+        \item What is the big deal with $\frac{1}{f}$ noise and power-law distributions and systems at the edge of criticality? 
+    \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\section{\scshape The original articles}
+
+\subsection{Choosing words}
+\begin{frame}{Choosing words}
+
+\begin{itemize}
+    \item Promises explanation; does not deliver
+    \item \emph{Speech is not modular, it's more complicated}
+    \item Favorite sentence:
+\end{itemize}
+
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\subsection{Ultrafast action and cognition}
+\begin{frame}{Ultrafast action and cognition}
+
+
+\begin{itemize}
+    \item \emph{Neuronal control cannot explain ultrafast reaction}
+    \item \emph{Scale-freedom is everywhere}
+    \item \emph{This thing hast to be complex}
+    \item Maybe it is just a review, but it sounds like the Rumpelstiltskin approach to neuroscience (\emph{neuromusculoskeletal synergies are the solution!})
+\end{itemize}
+\end{frame}
+
+\subsection{Brain-body-niche}
+\begin{frame}{Brain-body-niche}
+
+\begin{itemize}
+    \item \emph{No need to dissociate brain from body or body from environment}
+    \item \emph{Who needs internal representations when you're part of the system you're trying to represent?}
+    \item \emph{No computation}
+\end{itemize}
+\end{frame}
+
+\subsection{Multifractal fractality}
+\begin{frame}{Multifractal fractality}
+\begin{itemize}
+    \item \emph{Power-laws imply complexity. Exponents, exponents!}
+    \item \emph{Forget about computation. Let's talk about energy flow.}
+    \item \emph{No computation}
+\end{itemize}
+
+\end{frame}
+
+\section{\scshape Criticism}
+\subsection{Criticism}
+\begin{frame}{Criticism}
+    Approach taken by three of the articles
+    \begin{itemize}
+        \item \emph{Detect 1/f noise in time series of human performance}
+            \begin{itemize}
+                \item Competing models?
+                \item Frailty of the measure
+            \end{itemize}
+        \item \emph{The presence of 1/f noise implies an interaction dominant system}
+            \begin{itemize}
+                \item Other systems can also generate 1/f noise
+                \item Generation of 1/f noise in complex systems depends on specific circumstances
+            \end{itemize}
+        \item \emph{Cognition is interaction-dominant and traditional approaches should be abandoned}
+            \begin{itemize}
+                \item The complex systems approach should explain something that traditional approaches cannot explain.
+                \item Model instead of ``solving'' by dropping terms like self-organized criticality
+            \end{itemize}
+    \end{itemize}
+\end{frame}
+
+\subsection{Piles of rice and salt}
+\begin{frame}{Piles of rice and salt}
+\end{frame}
+
+\subsection{Does this apply to us?}
+\begin{frame}{Does this apply to us?}
+    I don't think much of the discussion applies to us (the original Frontiers article should not have confronted Wagenmakers and Friston and we \emph{do} talk about components as well as their interactions), however\ldots
+    \begin{itemize}
+        \item Do we make our best effort to disprove criticality? Competing hypotheses.
+        \item Do we try to model something other than 1/f?
+    \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\section{\scshape Doubts}
+\subsection{Doubts}
+\begin{frame}{Doubts}
+I'm no statistical physicist and I should not take on blind faith some of 
+    \begin{itemize}
+        \item Power-laws and fractals
+        \item Power-laws and complexity
+    \end{itemize}
+\end{frame}
+
+\end{document}