A logic exercise by Lewis Carroll: What conclusion can be drawn from these premises?

  1. All the human race, except my footmen, have a certain amount of common sense.
  2. No one who lives on barley sugar can be anything but a mere baby.
  3. None but a hopscotch player knows what real happiness is.
  4. No mere baby has a grain of common sense.
  5. No engine driver ever plays hopscotch.
  6. No footman of mine is ignorant of what true happiness is.
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