Argument slots cannot be parent slots?

[dram]

"3.1.6. Methods" says "an ordinary method always has an implicit parent argument slot named self", but "3.2.4. Parent slots" says "Argument slots cannot be parent slots."

Apparently there is conflict between them, then which one is correct?

[russellallen]

Well, argument slots generally can't be parent slots, except that an ordinary method always has an implicit parent argument slot named self. :)