one more sentence

2023-02-26-binplz.md

@@ -143,7 +143,9 @@ never able to make a fully production-ready service.
 
 binplz turned out to be one of those projects where coming up with a
 proof-of-concept is relatively easy, but making it into a production-ready
-service was quite a challenge.
+service was quite a challenge.  None of the problems were that difficult on
+their own, but it was quite difficult to come up with an overall solution
+that didn't cost too much, and would be quick to implement.
 
 I still think a service like binplz is a neat idea.  It would really show off
 the flexibility and power of Nix and Nixpkgs.  It could be a useful service if