Add comment about the dark side of shipping

readme.md

@@ -762,7 +762,7 @@ Time management and planning starts with estimates, but often degenerates into d
 
 ### Delivery
 
-- [How I ship projects at big tech companies](https://www.seangoedecke.com/how-to-ship/) - “Shipping is a social construct within a company. Concretely, that means that a project is shipped when the important people at your company believe it is shipped.”
+- [How I ship projects at big tech companies](https://www.seangoedecke.com/how-to-ship/) - “Shipping is a social construct within a company. Concretely, that means that a project is shipped when the important people at your company believe it is shipped.” That is the dark side of delivery, in which you optimize for visibility by upper-management for the next performance evaluation cycle.
 
 ## Agile