COUNTING PRINCIPLES

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According to Gelman & Gallistel (1978)
  • The one-one principle: There is a distinct counting word to match each of the items counted.
  • The stable-order principle: The list of words must be consistent.
  • The cardinal principle: The final word tells us how many there are in the number of items counted.
  • The abstraction principle: You can count any collection of objects whether real or imaginary.
  • The order irrelevance principle: It doesn’t matter what order you count in as long as you count each object only once you will get the same result.

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