John had just received a job offer from a company located in a big city. He was very excited about it and couldn’t wait to move there. He had been hearing a lot of vivid descriptions about the interesting life experiences he could have in the new city from his future colleagues, who have lived there for a couple of years. They told John that people in this big city are friendly, especially to the newcomers. Even more exciting, their social circles were so broad that John would likely meet various kinds of people such as entrepreneurs, pilots, sommeliers, and artists, just to name a few...