The document discusses the "hypodermic needle" or "magic bullet" theory of media effects. This theory posits that the media has powerful effects on passive audiences, and can directly "inject" ideas and influence attitudes and behaviors. However, the document notes this theory is now considered outdated and unreliable, as it ignores that audiences are sophisticated and will disagree with or interpret media messages differently. Modern research has since disproven the notion that audiences are entirely passive and can be manipulated against their will by media messages.