Update 'content/topic/lessons-in-how-(not)-to-be-heard.md'

content/topic/lessons-in-how-(not)-to-be-heard.md

@@ -1,6 +1,6 @@
 ---
 title: "Lessons in how (not) to be heard"
-has_experiments: [0]
+has_experiments: []
 ---
 # Lessons in how (not) to be heard