However, to make sense of the almost infinite amount of information available, a finite mind needs criteria and filters. When choosing from an enormous menu, both human inclination and the logic of search engines tend to act selectively and confirm initial bias.
While in theory everyone can access all information, in practice self-contained bubbles may emerge (naturally or by deliberate action), whereby many web users receive information, whether genuine or fake, that tends to reinforce their views, and conversely, they become relatively insulated from information that might put them into question.