It is bad to have distractions.
Lily is studying for a test and looks up videos on YouTube to help her learn the topic.
Lily wants to watch a video to help her learn about the subject.
Lily watches the video about the subject she needs to learn, takes notes, and reviews her notes and practice exams.
Lily watches the video about her subject but is then distracted by other videos on her suggested playlist.
Lily was able to confidently answer all the questions in her exam.
Lily was not able to retain as much information about the subject she needed to learn about and struggles in her exam.