It seems Joel finds it difficult to believe that people can eat alone without being lonely. I am an introvert that is rejuvenated by spending time alone. I like eating lunch by myself. It helps clear my mind.

The idea that new starters are "not allowed to sit by themselves in a corner" is draconian, and in my case, it would prove counterproductive. It would make me feel like I was back in school, being told where to sit by my teacher. This is not the mindset you want to instil in your employees.

I think the best approach is to provide a working environment where people have the opportunity to gather together. Those that want to socialize can do so, and those that prefer periods of solitude aren't made to feel guilty for spending time alone.