>Interoperability is fair use. That seems incompatible with the text of Section 107, which includes the amount copied as a factor for determining fair use. The

>Interoperability is fair use. That seems incompatible with the text of Section 107, which includes the amount copied as a factor for determining fair use. The more compatible your implementation is, the more you have to copy, so the logical end of this reasoning is that Android's implementation of Java would be fair use if it had copied all of the API, not just a subset.