An ethicist is somebody who sees something wrong with whatever you have in mind.
There was a failure to recognize the deep problems in AI; for instance, those captured in Blocks World. The people building physical robots learned nothing.
Eventually, robots will make everything.
If we understood something just one way, we would not understand it at all.
One can acquire certainty only by amputating inquiry.
You don't understand anything until you learn it more than one way.