diff --git a/journal/2021-03-14--13-00-04Z--service_pattern.org b/journal/2021-03-14--13-00-04Z--service_pattern.org
index 3d3cddb8..388e716c 100644
--- a/journal/2021-03-14--13-00-04Z--service_pattern.org
+++ b/journal/2021-03-14--13-00-04Z--service_pattern.org
@@ -31,3 +31,9 @@ OOP alone leave a lot of room in the design space.
 Thus we've seen numerous "OOP Design Pattern".
 That used the underlying OOP paradigm as a base and constructed
 abstractions over it.
+
+Even with all those Design Pattern it was up to the programmer to decide
+which one applies or not.
+Quite often there is not a single path easy to detect correct design
+pattern.
+Mainly the very hard part in programming is choosing the right abstraction.