[Defence] Finetune slides

defense/slides.md

@@ -82,7 +82,7 @@
 
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-## Q4: How have these tasks evolved over time (are they changes in the type, number, etc.)?
+## Q4: How have these tasks evolved over time (are there changes in the type, number, etc.)?
 
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@@ -108,11 +108,9 @@
 
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-## Directions for future studies
+### Directions for future studies
 
 * Verify results
-  * *abuse_filter_history* was missing
-  * manual filter classification only conducted by me
 * What proportion of quality control work do filters take over?
 * To implement a bot or to implement a filter?
 * What are the repercussions on affected editors?
@@ -121,15 +119,6 @@
 
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-## Outlook
-
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-
-<img src="images/Blackout_of_wikipediade_by_Wikimedia_Deutschland_-_March_2019.png" height="500" alt="blackout German Wikipedia March 2019">
-<small>[https://upload.wikimedia.org/wikipedia/commons/c/c5/Blackout_of_wikipedia.de_by_Wikimedia_Deutschland_-_March_2019.png](https://upload.wikimedia.org/wikipedia/commons/c/c5/Blackout_of_wikipedia.de_by_Wikimedia_Deutschland_-_March_2019.png)</small>
-
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-
 # Thank you!
 
 These slides are licensed under the [CC BY-SA 4.0 License](https://creativecommons.org/licenses/by-sa/4.0/).