Set the stage for Spatial Indexing post.

_posts/2022-12-9-Spatial-in-Non-Spatial-Context.md

@@ -7,7 +7,14 @@ tags:
   - GIS
 ---
 
-It's always surprising to me - and gratifying - when I see how simple concepts in GIS are still often of great utility.  There is no lack of complicated _Spatial Data Science_, with sophisticated ML modeling and complex raster processing and analysis, taking place.  Sometimes though, all we really need to know is, "how far away is Point A from PointB?"
+It's always surprising to me - and gratifying - when I see how simple concepts in GIS are still of great utility.  There's no lack of complicated _Spatial Data Science_, with sophisticated ML modeling and complex raster processing and analysis, taking place.  Sometimes though, all we really need to know is, "how far away is Point A from Point B?", and funnily enough - we often still struggle to answer this simple question.
 
 ![simple_index]({{ site.baseurl }}/images/wa_class_1_to_3_hospitals.png)
 
+Take the image above, where the black points represent Level 1 - 3 Trauma Centers (TC) located in Washington State.
+
+  * How many TC are within 60 miles of each city?  
+  * What is the closest Level 1 or Level 2 TC to each city? 
+  * How far away is the closest TC to each city?
+
+It's these types of questions that still drive many decisions in both business and in our personal lives.  In this post, I'm going to dig into why it can still be a challenge to answer these questions efficiently and flexibly, as well as present a solution which I feel is often overlooked.