diff --git a/readme.md b/readme.md
index 3ee4f4d4..3f07dee7 100644
--- a/readme.md
+++ b/readme.md
@@ -50,6 +50,7 @@ Wikipedia describes them as
 - Do not try to force them; bad things are supposed to happen, if done so. 
 - Keep in mind that design patterns are solutions **to** problems, not solutions **finding** problems; so don't overthink.
 - If used in a correct place in a correct manner, they can prove to be a savior; or else they can result in a horrible mess of a code.
+- Each pattern has its own trade-offs. And you need to pay attention more to why you're choosing a certain pattern than to how to implement it.
 
 > Also note that the code samples below are in PHP-7, however this shouldn't stop you because the concepts are same anyways.