On Thursday, we (Facebook) announced that we’ve reached the incredibly significant milestone of a billion monthly active users. That’s one and nine zeros. That’s one seventh of the population of the world. That’s a lot of people.

To celebrate, and in a way, say thank you to those first billion people, we produced an ad. My suspicion is that a lot of people won’t get it. It’s a little opaque. It’s definitely not safe, but wants to be quiet and humble. It’s also probably not what anyone would expect.

The magic of an ad like this, like Apple’s famous 1984 ad, is that it’s completely open to interpretation and it’s impact most likely won’t be truly appreciated until much later. Until then — this journey is 14% complete.