Removed unused files

Author: robmoffat

docs/estimating/Stop-Estimating-Start-Navigating.md

@@ -52,7 +52,7 @@ In the extreme, I've seen situations where the team at one location has decided
 
 When this happens, it's because somehow the team feel that [Coordination Risk](/tags/Coordination-Risk) is more unmanageable than [Schedule Risk](/tags/Schedule-Risk).
 
-There are some mitigations here:  video-chat, moving staff from location-to-location for face-time, frequent [show-and-tell](/tags/Review), or simply modularizing accross geographic boundaries, in respect of [Conway's Law](/tags/Coordination-Risk):
+There are some mitigations here:  video-chat, moving staff from location-to-location for face-time, frequent [show-and-tell](/tags/Review), or simply modularizing across geographic boundaries, in respect of [Conway's Law](/tags/Coordination-Risk):
 
 > "organizations which design systems ... are constrained to produce designs which are copies of the communication structures of these organizations."  - _[M. Conway](https://en.wikipedia.org/wiki/Conways_law)_
 

docs/practices/External-Relations/Outsourcing.md

@@ -116,7 +116,7 @@ hide_table_of_contents: true
             <div class="slide-notes">
                       <p>So, that’s often known as a LAMP stack.  So Linux, Apache, we know.  MySQL is a database - so all your wordpress posts get stored in there.  And PHP, Pearl, Python, they’re open-source programming languages - some of the biggest.  And Wordpress is written in PHP.</p>
 
-      <p>All of this is Open Source… except perhaps for MySQL, which was Open Source, but is now owned by Oracle.  But here’s the thing:  once Oracle (somehow) managed to aquire MySQL, the original open-source MySQL became MariaDB.</p>
+      <p>All of this is Open Source… except perhaps for MySQL, which was Open Source, but is now owned by Oracle.  But here’s the thing:  once Oracle (somehow) managed to acquire MySQL, the original open-source MySQL became MariaDB.</p>
 
 
             </div>
@@ -159,7 +159,7 @@ hide_table_of_contents: true
                 <img src="/img/presentations/OpenSource/images/images.010.jpg" alt="Image of slide number 10" />
             </div>
             <div class="slide-notes">
-                      <p>Ok, so here’s a story from before I was at Deutsche Bank, when I was working with Credit Suisse in their Risk department.  We were building a new risk calculator.  And the process went something like this.  The guy on the left, he’s the Analyst.  He writes a requirements document, explaining exactly how he thinks the calcuator should work.  Then, he goes to the pub.  Often, for several days. </p>
+                      <p>Ok, so here’s a story from before I was at Deutsche Bank, when I was working with Credit Suisse in their Risk department.  We were building a new risk calculator.  And the process went something like this.  The guy on the left, he’s the Analyst.  He writes a requirements document, explaining exactly how he thinks the calculator should work.  Then, he goes to the pub.  Often, for several days. </p>
 
       <p>Next, the developer picks up these requirements, and starts programming. </p>