  Along lines similar to Pariser’s, Halpern (2011, 5–6) notes that search engines like Google direct us to material that is most likely to reinforce our own “worldview, ideology, and assumptions” and thus “cut us off from dissenting opinion and conflicting points of view.” Pariser points out that with Google, a user now gets the results that the search engine company believes are best for that particular user.  He describes a case where two people entered in the keyword “BP” (for British Petroleum) during the time period of the accident involving the Deep Water Horizon oil rig in the Gulf of Mexico. In response to one user’s query, investment information about BP was returned as the lead result, while the other user received information about the oil spill.