Expand introductory text

Author: gjanee

01_make_map.qmd

@@ -3,12 +3,16 @@ title: "I want to make a map"
 lightbox: true
 ---
 
-The goal of this lesson is to demonstrate how to make a simple map, suitable for inclusion in a publication, using ArcGIS Online. We will follow a typical workflow of:
+The goal of this lesson is to demonstrate how to make a simple map, suitable for inclusion in a publication, using ArcGIS Online. As an exercise, you will be creating a map that reflects your personal experience biking on the UCSB campus. We will follow a typical workflow of:
 
 1.  Start with a basemap
 2.  Add feature layers from the UCSB campus
 3.  Draw annotations on top of the map
-4.  Prepare the map for presentation and exporting it. As an exercise, you will be creating a map that reflects your personal experience biking on the UCSB campus.
+4.  Prepare the map for presentation and export it
+
+As we will describe under [Other approaches](#sec-other-approaches) at the end of this lesson, there are many tools and techniques that can be used to create such a map. An advantage of using a GIS tool such as ArcGIS Online, and the central motivation for using GIS in this lesson, is that a GIS tool allow maps elements to be interpreted and manipulated as data, and in this way spatial analysis becomes possible.
+
+ArcGIS Online is but one of many GIS tools in existence. We use it in this lesson because it is in wide use in both commercial and academic settings. However, it is a proprietary and closed system that requires a paid subscription to use.  We note limitations and ramifications of using ArcGIS Online on the reproducibility and citability of one's work under [Caveats of using ArcGIS Online](#sec-caveats) at the end of this lesson.
 
 ## Our goal for today
 
@@ -333,7 +337,7 @@ This will save the exported map to you ArcGIS Online content. You can access it
 
 **NOTE**: Public sharing is a little more complicated, it requires that all of the layers used in the map are also shared with the public.
 
-## Other approaches
+## Other approaches {#sec-other-approaches}
 
 There are many ways of making a simple map. Here are some alternative approaches.
 
@@ -346,3 +350,7 @@ There are many ways of making a simple map. Here are some alternative approaches
 -   [OpenStreetMaps](https://www.google.com/maps): OpenStreetMaps is open source, managed and created by users worldwide. This data can also be downloaded and added to GIS software like ArcGIS Pro or QGIS.
 
 -   [CalTopo](https://caltopo.com) comes with a variety of base layers, including multiple types of topographic maps, and it provides a number of drawing and annotation tools. Certain features may require a subscription.
+
+## Caveats to using ArcGIS Online {#sec-caveats}
+
+TBD