“…An online resource for learning can be every website a user encounters, which means that most resources retrieved will not be informed by instructional design principles to aid learning. In addition, today’s search engines are typically not optimized for learning, but rather for the maximization of sold advertisements, relevance in terms of a document’s similarity to the query, or popularity of documents, and rank results accordingly (e.g., Machado et al, 2020 ). Consequently, they can present misleading or biased results when learners use them to acquire knowledge ( Segev, 2010 ); for example, recommender systems that present to the user mostly content that is, for example, regarding political orientation similar to previously consumed content could facilitate the formation of “filter bubbles” ( Pariser, 2011 ; Geschke et al, 2019 ).…”