via commonsenseadvice.com: “Your brain is hard wired to pay attention to about 150 people. Try to have a relationship with any more than that, and your life will turn to pure crap. Just ask the Military, Gore-Tex, or Krippendorf’s tribe. They’ll all tell you the same thing. One fifty is the way to go. They’ve known for hundreds of years that people work best in groups of 150 or less. Now it’s your turn.”