public vs external functions

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public vs external functions

knowing that the external/internal functions do the following:

  • External – Can be accessed externally only.
  • Internal – Contracts within the system and contracts deriving from them can access.

aren't the external functions useless?

I mean, we can make a public function and not call it in the smart contract , if we do so , it becomes automatically external, right?

submitted by /u/iMnoTGudd
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