diff --git a/thesis/2-Background.tex b/thesis/2-Background.tex
index cc40e9bda04dc10abfcd1ec7f68e8ea4f8a3a5e4..c791ea3c961a64821e6e05ed9ce0c54ef11fa724 100644
--- a/thesis/2-Background.tex
+++ b/thesis/2-Background.tex
@@ -65,7 +65,11 @@ Distinction filters/Bots: what tasks are handled by bots and what by filters (an
 
 socio-technical assemblages (see Geiger)
 
+* Huggle, Twinkle, AWB, Bots exist nearly since the very beginning (2002?), why did the community introduce filters in 2009?
+
 \subsection{Humans}
+* what part of the quality control work do humans take over? (in contrast to the algorithmic mechanisms)
+
 \subsection{Semi-automatic tools}
 \subsection{Bots}
 \subsection{ORES}
diff --git a/thesis/4-Edit-Filters.tex b/thesis/4-Edit-Filters.tex
index d370a880e658db136fec4a560dda710619b59fcd..0dabb79bd8bab5a18030926cbd6d1776a237139f 100644
--- a/thesis/4-Edit-Filters.tex
+++ b/thesis/4-Edit-Filters.tex
@@ -8,6 +8,15 @@ algorithmic governance?/socio-technical assemblage
 
 \section{Genesis}
 
+* what's filters' genesis story? why were they implemented? (compare with Rambot story) : try to reconstruct by examining traces and old page versions
+
+% When and why were Wikipedia edit filters introduced?
+
+Edit filters were first introduced on the English Wikipedia in 2009 under the name ``abuse filters''.
+Their clear purpose was to cope with the rising(syn) amount of vandalism as well as ``common newbie mistakes'' the encyclopedia faced~\cite{Signpost2009}.
+
+% TODO: when and why was the extension renamed
+
 \section{Data}
 
 The foundations for the present chapter lie in EN Wikipedia's policies and guidelines.
diff --git a/thesis/6-Discussion.tex b/thesis/6-Discussion.tex
index c870ebdcb99c46a7f56bec24c62eff975ed10933..ce75f67ece42ee4e3ed53bbbca76ead8ddf97e80 100644
--- a/thesis/6-Discussion.tex
+++ b/thesis/6-Discussion.tex
@@ -29,6 +29,16 @@ on board and help them clearly communicate norms."
 "designers should support an ecosystem of accessible and ap-
 propriate moderator tools."
 
+%***************************************
+
+* a realisation: number of filters cannot grow endlessly, every edit is checked against all of them and this consumes computing power! (signaled in various places) (and apparently haven't been chucked with Moore's law). is this the reason why number of filters has been more or less constanst over the years?
+* there seems to be a hard condition limit for filters: so the active ones are best of! which filters are best-of? a theory: "I've combated so and so many occurances of vandalism X with my bot. Let us implement a filter for this"
+
+* Claudia thinks it's easier to implement a filter than a bot (less technical knowledge needed)
+* Filter trigger before a publication, Bots trigger afterwads
+  ** that's positive! editors get immmediate feedback and can adjust their (good faith) edit and publish it! which is psychologically better than publish something and have it reverted in 2 days
+* thought: filter are human centered! (if a bot edits via the API, can it trigger a filter? Actually, I think yes, there were a couple of filters with something like "vandalbot" in their public comment)
+
 
 \section{Limitations}