以下文章来源于十分之一信箱 ，作者十分之一编辑部 十分之一信箱 . 与少年读者一起阅读、交流正在发生的大事件。 朋友们，周日好。二月的第一天，南方的同学们应该也已经考完试，正式进入假期了吧？你们都在哪里玩呢？如果你那儿下雪了，别忘了把好奇心团成一个雪球丢 给「Knock Knock 世界」。 人类究竟应该怎么活着？ A：多亏假期赋予我们的闲暇，可以思考这些问题。 假如 AI 有了意识会发生什么？ A：会不会思考自己究竟应该怎么「活着」？ 为什么特朗普对格陵兰岛感兴趣？美国怎么能随便说要将某个地区纳入美国? 美国为什么想占领格陵兰？丹麦人有没有反抗？ A：其实我们第 8 期《雪橇犬被裁员、特朗普想占岛，格陵兰岛正面临哪些危机》就讲过特朗普想要占 有格陵兰岛的原因。不过这一次少年听友们在「为什么」之外又提出了角度不一的问题，很有意思。感 觉我们可以接着写。 梵蒂冈是以欧洲最小的国家，连它的卫队都只有一百多人，他凭什么能存活在战火 纷飞的欧洲大陆上到了科技发达，现代教会仍然手握重权？ 我知道中国的很多历史，但元朝时期算是中国的吗？ 最近总是能听说欧洲非洲等地频发蝗灾，可为什么自从古代以来就一直在频发的中国近些年都没 ...

Core Viewpoint - The article discusses various observations and questions raised by young readers regarding societal norms, consumer behavior, and the impact of advertising and sponsorship on businesses [1][2][3]. Group 1: Consumer Behavior - Young readers express curiosity about why certain products, like popcorn and fries, are more expensive in cinemas compared to supermarkets, questioning the pricing strategies of businesses [1]. - There is a discussion on the urgency of delivery riders, such as those from Meituan and Ele.me, highlighting the perception that "time is money" in the delivery industry [2]. - The article raises questions about the profitability of shared bicycles, especially when they are often found unused and stacked together [2]. Group 2: Advertising and Sponsorship - The article explores how sponsorships, advertisements, and promotional sales work, questioning whether sponsors incur losses and the effectiveness of influencers in driving product sales [3]. - It mentions the role of short video bloggers in advertising, questioning the rationale behind paying them when their followers may not purchase the advertised products [3]. Group 3: Health and Safety Concerns - A young reader expresses concern over food safety following a poisoning incident, leading to questions about artificial coloring in food and its potential health risks [3]. - The article discusses the differences between industrial and edible food colorings, emphasizing the importance of understanding food safety [3]. Group 4: Cultural Observations - The article notes the differences in cleanliness and quietness observed in Japan, attributing it to lower population density [3]. - It highlights the artistic transformation of school entrance barriers in Shunde, contrasting it with the lack of similar changes in Guangzhou, prompting questions about community engagement and aesthetics [3]. Group 5: Podcast Promotion - The article promotes the "Knock Knock World" podcast, which aims to engage young audiences with global events and fresh perspectives, indicating a growing trend in educational audio content [4][5][6].

Group 1 - The article discusses the rising popularity of kale in food and beverage recipes, despite its rough texture and taste, indicating a trend in health-conscious eating [2] - The podcast "Knock Knock World" is a collaborative project aimed at engaging young audiences with global events, featuring updates three times a week [4][5] - The first season of "Knock Knock World" is set to run from March 25, 2025, to March 24, 2026, with a subscription price of 365 yuan available on various audio platforms [6] Group 2 - The article raises questions about the necessity of purchasing Boeing and Airbus aircraft despite the availability of the C919, highlighting competitive dynamics in the aviation industry [3] - It explores JD.com's expansion into the travel and hospitality sector after its foray into food delivery, suggesting strategic advantages in diversifying its business model [3] - The article touches on the enduring appeal of Marvel movies and the success of Japanese anime, indicating cultural influences and market opportunities in the entertainment industry [3]