diff --git a/30_Thesis/sections/00_introduction.tex b/30_Thesis/sections/00_introduction.tex
index ff8d337..83d80e3 100644
--- a/30_Thesis/sections/00_introduction.tex
+++ b/30_Thesis/sections/00_introduction.tex
@@ -4,7 +4,7 @@
 \section{Motivation}
 \label{sec:Introduction:Goals}
 
-Customers and sales people used to be faced with big catalogues that describe how a complex product can be build. These catalogues specified what is possible to combine but it was easy to make mistakes. The sales process took a long time because orders had to be manually validated. With the advent of mass customization these issues started to be addressed. In mass customization a configurator is used. The configurator has a rulebook that contains all the attributes of a product, their corresponding characteristics and rules on how these can be combined. A system like that allows to reduce the workload and cost of sales \cite{shafieeCostBenefitAnalysis2018}. "[...] [P]roduct configuration is seen as a team activity with divergent interests" \cite{mendoncaCollaborativeProductConfiguration2008} and therefore research in the field of group-based configuration started receiving more attention. 
+Customers and sales people are faced with big catalogues that describe how a complex product can be build. These catalogues specify what is possible to combine but it is easy to make mistakes. The sales process takes a long time because orders have to be manually validated. With the advent of mass customization these issues are addressed. In mass customization a configurator is used. The configurator has a rulebook that contains all the attributes of a product, their corresponding characteristics and rules on how these can be combined. A system like that allows to reduce the workload and cost of sales \cite{shafieeCostBenefitAnalysis2018}. "[...] [P]roduct configuration is seen as a team activity with divergent interests" \cite{mendoncaCollaborativeProductConfiguration2008} and therefore research in the field of group-based configuration starts receiving more attention. 
 To give an idea of situations that can use group-based configuration, here are some examples:
 \begin{itemize}
     \item A company's lorry fleet (e.g. driver, purchasing-manager, marketing manager)