After the most recent curriculum update, the data types lesson that is being referred to here, is now after this current lesson, not before it. So it might be a bit confusing for newer folks!
Adding to that, that data types lesson is also referenced near the bottom of this lesson, in the Identify the Relationship Between Arrays and Objects section.
👋🏾Hi there!
https://learn.co/tracks/full-stack-web-development-v8/module-14-front-end-web-programming-in-javascript/section-4-communication-with-the-server/js-fundamentals-objects#what-is-an-object?
After the most recent curriculum update, the data types lesson that is being referred to here, is now after this current lesson, not before it. So it might be a bit confusing for newer folks!