I only read a summary / excerpt / essay (don't which it was exactly and if it was from the book or another text by Postman on the same subject) quite some time

I only read a summary / excerpt / essay (don't which it was exactly and if it was from the book or another text by Postman on the same subject) quite some time ago. His premise basically is that humans are increasingly becoming incapable of doing meaningful stuff or having meaningful conversations while gladly frittering away time for meaningless bullshit provided by the media. While the dominant theme in his book naturally is TV the connection to today's social media usage and news consumption is quite obvious. However, while the subject is important I'm not sure you need to read the entire book for the message to sink in.