diff --git a/README.md b/README.md
index e7dfc42..245cd15 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,9 @@
 [![Package information: NPM license](https://img.shields.io/npm/l/@ayco/astro-sw)](https://www.npmjs.com/package/@ayco/astro-sw)
 [![Bundle Size](https://img.shields.io/bundlephobia/minzip/@ayco/astro-sw)](#library-size)
 
-The integration accepts service worker path and automatically injects dynamic variables such as `assets` generated by Astro for caching.
+The integration accepts service worker path and automatically injects dynamic variables such as `__assets` generated by Astro for caching.
+
+The main philosophy is to [invert the control](https://en.wikipedia.org/wiki/Inversion_of_control) compared to other integrations that generate the service worker for devs. The [service worker](https://web.dev/articles/offline-cookbook) API is such a powerful feature that developers need to be able to make decisions in using it.
 
 ## Installation