diff --git a/README.md b/README.md
index 67ed56b..52d2519 100644
--- a/README.md
+++ b/README.md
@@ -135,6 +135,7 @@ duplicate([1,2,3,4,5]); // [1,2,3,4,5,1,2,3,4,5]
 * Why would you use something like the `load` event? Does this event have disadvantages? Do you know any alternatives, and why would you use those?
 * Explain what a single page app is and how to make one SEO-friendly.
 * What is the extent of your experience with Promises and/or their polyfills?
+* What are the pros and cons of using Promises instead of callbacks?
 
 #### Network Questions: