Learn in the textbookDistortions of the Information Environment and Countermeasure Technologies
DefinitionA filter bubble (フィルターバブル) is a phenomenon in which search engines and social media automatically choose what to show based on a user's browsing history and similar data, so what the user sees tilts toward their preferences and their view narrows as if they were inside a bubble.
ExplanationAn algorithm here means the processing procedure that automatically picks the next articles or posts to show, based on browsing history and click patterns. Information that is not picked never appears on screen, so users rarely notice what has been left out.
AnalogyPicture a shop where the same clerk always stocks the shelf only with items similar to what you bought last time. It is convenient, but you stop noticing the products that never make it onto the shelf.
Memory hookA "filter" is a sieve, and a "bubble" is a clear sphere. Imagine that only what passes through the sieve reaches the inside of the bubble.