Are we done yet?

In the closing lines of the last chapter, Postman writes, "For in the end, he was trying to tell us that what afflicted the people in Brave New World was not that they were laughing instead of thinking, but that they did not know what they were laughing about and why they had stopped thinking." Postman makes this distinction to show how people have become accustomed to just laughing when a show has been deemed funny. They don't really know what is going on and are dumbfounded. Nowadays, it seems as if people are just doing whatever they want without even thinking, not just laughing.