All the responses in the article only consider the use of inheritance in an object-oriented, public way. In those cases, multiple inheritance is harder to find good examples for.

And now the million dollar question is, how do default interface methods avoid “the diamond problem,” i.e., how does it resolve issues of multiple inheritance using interfaces?

A controversial new proposal for .NET suggests the introduction of a limited form of multiple inheritance via abstract interfaces. This feature was inspired by Java’s default methods.