diff --git a/docs/ArchitectureLearningJourney.md b/docs/ArchitectureLearningJourney.md
index 9258581115..d98dadf1e9 100644
--- a/docs/ArchitectureLearningJourney.md
+++ b/docs/ArchitectureLearningJourney.md
@@ -25,6 +25,8 @@ The app architecture has three layers: a [data layer](https://developer.android.
 <img src="images/architecture-1-overall.png" width="600px" alt="Diagram showing overall app architecture" />
 </center>
 
+> [!NOTE]  
+> The official Android architecture is different from other architectures, such as "Clean Architecture". Concepts from other architectures may not apply here, or be applied in different ways. [More discussion here](https://github.com/android/nowinandroid/discussions/1273).
 
 The architecture follows a reactive programming model with [unidirectional data flow](https://developer.android.com/jetpack/guide/ui-layer#udf). With the data layer at the bottom, the key concepts are: