doc: Git does not replace (or include) Git

content/docs/install/index.md

@@ -1,7 +1,16 @@
 # Installation
 
-> Please double check that you don't already have DVC (for example running
-> `which dvc`) before trying to install it.
+<admon>
+
+DVC does not replace or include Git. You must have `git` in your system to
+enable important features such as [data versioning] and [quick experimentation]
+(recommended).
+
+[data versioning]: /doc/use-cases/versioning-data-and-models
+[quick experimentation]:
+  /doc/user-guide/experiment-management/experiments-overview
+
+</admon>
 
 - [Install on macOS](/doc/install/macos)
 - [Install on Windows](/doc/install/windows)

content/docs/start/data-management/data-versioning.md

@@ -278,10 +278,10 @@ $ git commit data/data.xml.dvc -m "Revert dataset updates"
 
 </details>
 
-Yes, DVC is technically not even a version control system! `.dvc` file contents
-define data file versions. Git itself provides the version control. DVC in turn
-creates these `.dvc` files, updates them, and synchronizes DVC-tracked data in
-the <abbr>workspace</abbr> efficiently to match them.
+Yes, DVC is technically not a version control system! Git itself provides that
+layer. DVC in turn manipulates `.dvc` files, whose contents define the data file
+versions. DVC also synchronizes DVC-tracked data in the <abbr>workspace</abbr>
+efficiently to match them.
 
 ## Large datasets versioning
 

content/docs/user-guide/project-structure/index.md

@@ -1,9 +1,9 @@
 # Project Structure
 
-Using `dvc init` in your <abbr>workspace</abbr> will start a <abbr>DVC
+Using `dvc init` in your <abbr>workspace</abbr> will initialize a <abbr>DVC
 project</abbr>, including the internal `.dvc/` directory. From there on, you
-will create and manage different DVC files and populate the <abbr>cache</abbr>
-as you use DVC and work on your data science experiments.
+will create and manage different DVC metafiles (below), and populate the
+<abbr>cache</abbr> with data artifacts as you work on your ML experiments.
 
 - `dvc.yaml` files define stages that form the pipeline(s) of a project. All
   stage-based features such as `dvc params`, `dvc metrics`, and `dvc plots` are
@@ -19,5 +19,9 @@ as you use DVC and work on your data science experiments.
   [configuration](/doc/command-reference/config) file(s), default local cache
   location, and other utilities that DVC needs to operate.
 
-These metafiles should be versioned with Git (in Git-enabled
-<abbr>repositories</abbr>).
+<admon type="info">
+
+These metafiles are typically versioned with Git, as DVC does not replace its
+distributed version control features, but rather extends on them.
+
+</admon>

content/docs/user-guide/what-is-dvc.md

@@ -43,14 +43,15 @@
 
 ## DVC does not replace Git!
 
-DVC files such as `dvc.yaml` and `.dvc` files serve as placeholders to track
-large data files and directories for versioning (among other
-[purposes](/doc/user-guide/project-structure)). These metafiles change along
-with your data, and you can use Git to place them under
-[version control](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
-as a proxy to the actual data versions, which are stored in the <abbr>DVC
-cache</abbr> (outside of Git). This does not replace features of Git.
-
-DVC does, however, provide several commands similar to Git such as `dvc init`,
-`dvc add`, `dvc checkout`, or `dvc push`, which interact with the underlying Git
-repo (if one is being used, which is not required).
+[DVC metafiles] change along with your data, and you can use Git to place them
+under distributed [version control] as a proxy to the actual data versions,
+which are stored in the <abbr>DVC cache</abbr> (outside of Git). DVC does not
+replace features of Git, but rather extends on them for ML-specific needs.
+
+DVC does provide several commands similar to those in `git`, such as `dvc init`,
+`dvc add`, `dvc checkout`, and `dvc push`. DVC operations interact with the
+underlying Git repo (if one is being used, which is not required).
+
+[dvc metafiles]: (/doc/user-guide/project-structure)
+[version control]:
+  https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control