The role of drugs in the exercise of political control is also coming under increasing discussion. Control can be through prohibition or supply. The total or even partial prohibition of drugs gives the government considerable leverage for other types of control. An example would be the selective application of drug laws permitting immediate search, or “no knock” entry, against selected components of the population such as members of certain minority groups or political organizations.
But a government could also supply drugs to help control a population. This method, foreseen by Aldous Huxley in Brave New World (1932), has the governing element employing drugs selectively to manipulate the governed in various ways.
To a large extent the numerous rural and urban communes, which provide a great freedom for private drug use and where hallucinogens are widely used today, are actually subsidized by our society. Their perpetuation is aided by parental or other family remittances, welfare, and unemployment payments, and benign neglect by the police. In fact, it may be more convenient and perhaps even more economical to keep the growing numbers of chronic drug users (especially of the hallucinogens) fairly isolated and also out of the labor market, with its millions of unemployed. To society, the communards with their hallucinogenic drugs are probably less bothersome--and less expensive--if they are living apart, than if they are engaging in alternative modes of expressing their alienation, such as active, organized, vigorous political protest and dissent. […] The hallucinogens presently comprise a moderate but significant portion of the total drug problem in Western society. The foregoing may provide a certain frame of reference against which not only the social but also the clinical problems created by these drugs can be considered. 
Before I could hang up, she said, "Wait a minute, did you say your name was Wayne ?" "Yes." I answered. “Well, Sally left a message for you. She wrote it down in case you called. "Let me read it to you.” The note said, "Tell him there are other worlds to sing in. He'll know what I mean.”
As We May Think also predicted many kinds of technology invented after its publication in addition to hypertext such as personal computers , the Internet , the World Wide Web , speech recognition , and CD-ROM encyclopedias such as Encarta and online encyclopedias such as Wikipedia : "Wholly new forms of encyclopedias will appear, ready-made with a mesh of associative trails running through them, ready to be dropped into the memex and there amplified." 
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