Philip Roberts' talk at JS Conf, is one of the most-watched talks in the JavaScript community, for a good reason. It's excellent.
He's also the creator of the loupe tool that you've been using in this chapter.

We definitely recommend that you watch his 25-minute talk on the event loop at some point in your career: What the heck is the event loop anyway?

Several students left a comment on this lesson saying that they learned a lot from this video.

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