To be clear, Cap'n Proto's serialization layer, from a schema perspective, is almost exactly the same as Protobuf (though with a very different underlying encod

To be clear, Cap'n Proto's serialization layer, from a schema perspective, is almost exactly the same as Protobuf (though with a very different underlying encoding). The interfaces and inheritance relate to the RPC system. The interfaces are for remote objects. See: https://capnproto.org/rpc.html https://capnproto.org/rpc.html