assignment: added section on Why we use it.

Also added strikethrough support

mkdocs.yml

@@ -31,3 +31,6 @@ plugins:
       enable_creation_date: true
 markdown_extensions:
   - tables
+  - pymdownx.caret
+  - pymdownx.mark
+  - pymdownx.tilde

src/skynet/nix.md

@@ -137,8 +137,24 @@ For a full explanation of its key features I would like to point you to the [Lix
 We use Lix instead of CppNix as the goals of Lix align with the viewpoints and ideologies that our members hold and what we want to represent as a (computer) society.
 
 ## Why we use it
-{Details of how the config was ascattered and hard to find}  
+Back in [January 2023 we got disconnected from teh internet][skynet_disconnect].  
-{Also embracing devops and reduced manpower}
+For the purposes of this document the root cause is not of importance.
+What *is* the mad Indian Jones ~~treasure~~ config hunt that it triggered.   
+![Brendan delving for configs][skynet_disconnect_reenactment]  
+Additionally ITD require us to update our systems regularly (as they should be).  
+Technically this config delving is an ongoing effort, the old hard drives are occasionally connected up and raided.
+
+As you would imagine this is not ideal, a exasperating factor was that many programs had changed both the location and format of their configuration over the decades that Skynet has been using them.  
+
+This is where teh strengths of NixOS lie.  
+The config for the entire cluster is located in a singular location.  
+Using modules which work as a translation layer if the requirements for the programs change this dont impact us.  
+Not to mention we can fearlessly (and regularly) update our systems it is a match made is heaven.  
+
+Currently the Skynet cluster is comprised of 15 servers which have NixOS on them.  
+A combination of LXC's (Linux Containers) and physical bare metal servers.   
+Since these systems share a base config (with tehir individual applications layered on top) we are able to efficiently build them, building a package for one will also built it for other servers.  
+Combine that with teh ability to deploy them via our own selfhosted CI/CD we have a strong foundation to work off of.
 
 ## How we use it
 ### Requirements
@@ -166,3 +182,5 @@ We use Lix instead of CppNix as the goals of Lix align with the viewpoints and i
 [nix_dns]: https://forgejo.skynet.ie/Skynet/nixos/src/branch/main/applications/dns/dns.nix
 [nix_lix]: https://lix.systems/
 [nix_lix_about]: https://lix.systems/about/
+[skynet_disconnect]: https://public.skynet.ie/postmortem/2023-01-12_Loss-of-network-access.html
+[skynet_disconnect_reenactment]: https://forgejo.skynet.ie/Computer_Society/presentations_compsoc/media/branch/main/src/slides/skynet/0_intro_img1.png