Eleventh Commandment (thing)

Classification for a rule which is so real, so important, so pervasive, and so self evident that it really should have been part of the ten commandments. A few examples are:

• Thou shalt not get caught
• Thou shalt not eat yellow snow
• Thou shalt not pee on electric fences
• Thou shalt not write bad checks
• Thou shalt not go back to drinking hard liquor after moving on to beer
• Thou shalt make system backups