Conversations About Direct recombination

I was talking to Simon today about direct combination. I said i had had a great idea and adventure game with direct combinations as the user interface. This was a relief as I already thought of one for doing statistics program . The conversation drifted onto How to rethink the object paradigm.

I think I might succinctly put it all together in one diagram.

Where two types have some overlap (in methods or instance variables) then this is when we have a super class.