diff --git a/lectures/user-experience/slides.qmd b/lectures/user-experience/slides.qmd
index d17088ef2d1a68fb1d6451298a33e61f6cdc9215..fce6d2e702a580e9a273b8efc8ef237575340a05 100644
--- a/lectures/user-experience/slides.qmd
+++ b/lectures/user-experience/slides.qmd
@@ -227,17 +227,20 @@ def is_tropical_atlantic(*, lon, lat):
 
 ![](static/mpim_door.jpeg){width="60%"}
 
-## Usability {.leftalign}
-You get a result and the software is intuitive and easy to work with.
+## Usability
+You get a result and the software is<br/>intuitive and easy to work with.
 
-### Ease of use
+## Usability: Ease of use {.leftalign}
 * intuition = function
 * standards
-* design needs to have a logical flow
-* well-structured navigation system or documentation helps
+* logical flow
+* well-structured navigation system or documentation
 
-### Efficiency
-* a result is there in a reasonable time.
+## Usability: Efficiency {.leftalign}
+A result is there in
+
+* reasonable time
+* using reasonable resources
 
 # Information architecture