播客在美国为什么这么火？

Group 1 - OpenAI launched its podcast on YouTube, revealing the behind-the-scenes of ChatGPT, with two episodes released so far [1] - The popularity of podcasts is highlighted by figures showing that 70% of Americans aged 12 and above have listened to a podcast, with 43% listening weekly [5][6] - The cultural context in the U.S. promotes a preference for direct verbal communication, which has contributed to the rise of podcasts as a medium [19] Group 2 - The concept of "secondary orality" describes how electronic media like podcasts revive oral communication, blending structured writing with interactive dialogue [20][21] - The historical significance of FDR's "Fireside Chats" in 1933 is noted as a pivotal moment that reshaped American trust in oral communication [25][26] - The podcasting landscape has evolved significantly since 2004, with the introduction of automatic subscription and push notifications, leading to a surge in podcast content [31][34] Group 3 - The podcasting industry saw a major breakthrough with the success of the show "Serial" in 2014, which demonstrated that podcasts could deliver high-quality storytelling [38][40] - The number of podcasts in the U.S. grew from approximately 180,000 in 2015 to over 4 million by 2023, indicating rapid industry expansion [44] - The podcast advertising market has also expanded significantly, reaching $2.6 billion in 2023 and projected to exceed $4.2 billion in 2024 [46] Group 4 - The cultural attributes of podcasts have become more pronounced, with various social issues being discussed, transforming podcasts into platforms for community culture [47][48] - The current state of podcasting in China is noted as fast-growing but still considered non-mainstream compared to the U.S. [49][51]