We hit it! Amidst all the excitement, it's worth remembering that if we had just two more fingers, we'd still be waiting for it to hit 20,736.
We want to hear what you think about this article. Submit a letter to the editor or write to letters@theatlantic.com.
Megan McArdle is a columnist at Bloomberg View and a former senior editor at The Atlantic. Her new book is The Up Side of Down.