2. Restrictions from one programmer to another. These allow a library author to stop a library user from calling their functions with data that they aren't able to handle. (Enforced by the compiler, of course.)
This is true regardless of how you feel about race scapegoating or political correctness.
(Obviously, both of those labels were invented by their detractors.)
I steal men's memes and make them my own.
(I did not make this, I just found it somewhere.)