What is an everyday modern convenience that you believe causes more hidden problems than it solves?

Why do some people believe Trump aims to centralize power, and how do they justify the comparison to authoritarian regimes?
From your perspective as a Taiji historian, what is one surprising historical detail about Chinese daily life that most modern people would find hard to believe?
When someone realizes they are in a relationship with a manipulative person, what is the very first thing they should do?
Why do narcissists often have a completely different personality around their friends and coworkers?