Choose your own adventure: How to use this image in I/O class?

I challenged my Twitter friends to find the I/O lesson in this video. As always, my I/O friends did not fail me.

Here are some of the ideas:

For complete list of I.O suggestion, see the original thread: https://twitter.com/Notawful/status/1178995613641449472

Credit to @emergidoc for sharing the video!