Lecture 7 of Stanford’s iOS Development course from Spring 2020 begins with a conceptual discussion of multithreading and then launches into a completely new demonstration, EmojiArt, reviewing MVVM and then using SwiftUI API such as ScrollView, UIImage, Drag and Drop, and background/overlay to create an “emoji artist’s” tool. The demo circles back to multithreading by showing how to use this technology to keep the downloading of an image from the internet from blocking the responsiveness of the application.