Even 25 years later, the planes keep crashing, and the towers keep falling. All across the web, people who are old enough to remember September 11, 2001, are rewatching the attacks and rereading about the aftermath, often via devices and platforms that didn’t exist 25 years ago.

After 25 years, 100 million Americans have no memory of the day that changed everything. In an age of social media, disinformation and mistrust, that can be dangerous.

Even 25 years later, the planes keep crashing, and the towers keep falling. All across the web, people who are old enough to remember September 11, 2001, are rewatching the…