Why “flatten the curve” chart worked

<img width=“745” height=“291” src=“https://i1.wp.com/flowingdata.com/wp-content/uploads/2020/03/flatten-the-curve-by-drew-harris.png?fit=745%2C291&ssl=1" class=“attachment-medium size-medium wp-post-image” alt=“” srcset=“https://i1.wp.com/flowingdata.com/wp-content/uploads/2020/03/flatten-the-curve-by-drew-harris.png?w=745&ssl=1 745w, https://i1.wp.com/flowingdata.com/wp-content/uploads/2020/03/flatten-the-curve-by-drew-harris.png?resize=210%2C82&ssl=1 210w” sizes=“(max-width: 745px) 100vw, 745px” …