a little bit of a sketchy warning

Huxley is obviously terrified of what's to come. He fears that we're going to be taken over by something. Whether it's technology or a person, we're going to be controlled. This is completely possible, and it amuses me how we read these books and think that it's fiction when it could happen to us. Dictators are smart. Think of Hitler. He was very smart. A genius and a great speaker to convince millions of people that his way was right. This is what Huxley is warning us about. He wants us to be careful of the things that we just "jump on" as the right thing when it could very well be leading us into a system of utter control.