This is in the collection, The Complete Robot.
A fairly “meh” story. If you can’t guess what’s going on long before you’re told in the story then you’re a bit lacking in something.
But, one has to read the whole of the robot stories so one just has to accept that there’s going to be the odd one that just lacks somewhat and just get on and read it.
Next up is going to be, The Tercentenary Incident.