Very good point that artificial intelligence (AI) will probably not be able to come up with ethical rules or decisions. This part might be the fundamental and unique talent that can only be provided by human beings. If blockchains, AIs and other software will relieve us humans from a lot of painful work, we rather keep this job in our hands. I guess its also much more fun and "fulfilling" anyways ... still we have to create the technological tools that help us on this; so welcome to Nemethics ;-)