Odd? Maybe. But just think about how many people have entered and exited your life with valuable and not so valuable contributions? Influences from home, school, extended family, friends, other social groups...?
So how does one weed through this seemingly endless list of people? The Pyramid of Importance - a book that tells you how to value people in your life. No, it's not yet available on Amazon or Flipkart...it's still being written. The author has a severe case of writer's block - on the Acknowledgments page.