清华大学彭凯平教授追踪调查了30万中小学生，发现普遍存在“四无”现象，即学习无动力，对真实世界无兴趣，社交无能力，生命无意义感。『张朝阳：在中国长大耽误太多时间』https://mp.weixin.qq.com/s?__biz=MzA3MzY3MDI0NA==&mid=2649651245&idx=1&sn=de04403e58b87744d1ed99a650a653fe&chksm=87115326b066da30302d5bd975fdfba5b83f817dd602d97b92a22e2faaa0c7662c9c1211c18e&mpshare=1&srcid=0608xRFaJsr2bGGoV6AOgn3o&sharer_shareinfo=61896c34ca10c6c9a97539101117961f&sharer_shareinfo_first=61896c34ca10c6c9a97539101117961f&from=timeline&scene=2&subscene=1&sessionid=1717820323&clicktime=1717823205&enterid=1717823205&ascene=2&fasttmpl_type=0&fasttmpl_fullversion=7239299-zh_CN-zip&fasttmpl_flag=0&realreporttime=1717823205848&devicetype=android-34&version=28003156&nettype=WIFI&abtest_cookie=AAACAA%3D%3D&lang=zh_CN&exportkey=n_ChQIAhIQRzJhGMSgIolpw%2FIy5IxXVBL2AQIE97dBBAEAAAAAAIRMJTk5q04AAAAOpnltbLcz9gKNyK89dVj0gcsD%2FZCXsppJi4DM6uP9EyVd6FVKfvjb0ZgQSlQTqO6IHo2xxLpCXfyknieACvOtjrL2Y6RocPfYLna7167d2MSfkvR3wdlxpGSfhrYDK%2Fe9jxx8N2WGlsmH05KoJbweiiJGcO2mVwKa22XRkyOK3FucevOfdQdLtiLoD7PFAE6eMLgTNQPnz8vRhchlsV8Y9jBqq9WdFaU9ZIui16r7b5nwoPYgN%2FfSpnUcn%2BBogBurPoTz%2BLYlBD9A0%2BFb63GS%2FZdzAnTUsPQ3NKJrTL61AQ%3D%3D&pass_ticket=rwruPMeX9YY9kCtom0QHDr%2BnHI6lbIbIqksfBbicu2zzSNKU3uaWwTWyoqLW8%2Fpe&wx_header=3