Quote from Phoebe in The One with the Cake
Rachel: We had this idea to make a birthday video for Emma and we'll give it to her when she's 18. Phoebe: Oh, cool. Wow, it's like a time capsule. Oh, just think, she's gonna be watching that video on a TV that hasn't even been invented yet with friends who, right now, are just, like, babies. And they'll be living in a floating city that the humans built to escape the ant people. Ross: That's the hope.