Did you know that the first version of AE didn’t even have a timeline? Check out this screenshot from Dan Wilk (click to enlarge):

As part of AE’s 20th Anniversary celebration, you can:

Join After Effects creators Dave Simons and Dan Wilk as they take you on a trip down memory lane to see how After Effects started—from concept to initial user interface. See how much After Effects has changed throughout the years and why things are simply the way they are.

The event is set for this Thursday at 10am Pacific time. Here’s more info.