In this episode of the All Ears English podcast (2332), the hosts delve into a common trait in American English where people often say "I don't know" after sharing their opinions. They discuss listener feedback that indicates this can be confusing for non-native speakers. The hosts examine the social role of this phrase, noting that it can soften a viewpoint, demonstrate adaptability, and prevent an overly forceful stance. However, relying on it too much might come across as uncertain. To convey similar meanings without negative implications, the podcast suggests alternatives like "I'm not sure" or "I'm open." Ultimately, the episode encourages using "I don't know" with intention rather than as a simple filler.