10. Opposite-sex friendships: A lot of people think it’s OK to have a close friend of a different sex. The problem is the uncertainty it creates in your partner’s mind. If you care for that person, then he or she should be your first concern. Why...

If an alien landed on Earth and said, "Take me to your leader," who would you take it to? Maybe President Barack Obama? Would there be some sort of United Nations conference, or maybe the alien would create a Facebook page and contact Mark Zuckerberg?...