People began to improve their speed reading skills. They were arranging special exercises, which were helping improving speed of reading (you can find some of them on this page) Many of people have realized that speed reading opens new opportunities in front of them. Daily, enormous amount of information was impossible to overcome. So people where practicing speed reading techniques. But one problem has appeared. The barrier of 1000 words per minute.
Person can talk text in mind with speed 1000 words per minute. Better results are impossible. People start to eliminate bad habit which is called vocalization (speaking the reading text, even speaking it in mind)