diff -r 8980686aa2e8 -r eb1b4ad23941 cws/cw04.tex
--- a/cws/cw04.tex	Sun Aug 11 21:01:49 2019 +0100
+++ b/cws/cw04.tex	Tue Aug 13 10:23:20 2019 +0100
@@ -96,6 +96,12 @@
   
 \section*{Coursework 9 (Scala)}
 
+\mbox{}\hfill\textit{``[Google’s MapReduce] abstraction is inspired by the}\\
+\mbox{}\hfill\textit{map and reduce primitives present in Lisp and many}\\
+\mbox{}\hfill\textit{other functional language.''}\smallskip\\
+\mbox{}\hfill\textit{ --- Dean and Ghemawat, who designed this concept at Google}\bigskip
+
+\noindent
 This coursework is worth 10\%. It is about a regular expression
 matcher and the shunting yard algorithm by Dijkstra. The first part is
 due on \cwNINE{} at 11pm; the second, more advanced part, is due on