Topics for an article on secrecy

• Animals generally endeavor to conceal the location of their den or nest from predators.
• Governments and corporations often attempt to conceal information about their operations from other governments.
• Preservation of secrets in one of the goals of information security.
• Secret keys are essential in most cryptography, which in turn has as its goal the hiding of secrets.
• Information hiding is a design principle in much software engineering.
• Keeping one's strategy secret is important in many aspects of game theory
• Secret societies -- why keep membership a secret? why not?

• Confidentiality
• Deception
• Espionage
• Military secret
• Secret sharing
• Security classification
• Surprise