diff --git a/README.md b/README.md
index 17ef487..2f7c399 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Settling a discussion from the pub. Yes, you can extract energy from an infinite source of energy. That's allowed.
 
-In [this video](demo.webm) I am modulating the spring constant.
+In [this video](demo.webm) I am modulating the spring constant. The environment is damped, so I definitely could extract energy.
 
 ```
 python main.py