The point is that it's already included unless you specifically exclude it. If we take "pull" as a volitional action rather than a passive allowance, then we don't need to "pull" any libraries.
I'm really just playing devil's advocate here (which is why I prefaced it with "To be fair…"). From the considerable amount of hate (rather than calm dismissal) the comment seemed to be getting, I felt that people weren't bothering to think it through. joshwa's response seemed to indicate that "#include <stdio.h>" was pulling in a library, which is at least as wrong.
