Chapter 70 guide

Servant: ...synonymous with the more common name "robot".This word exists in the ancient legends of several worlds. According to records, servitors are generally made of metal and resemble human beings in appearance, but it is said that some servitors are made of pseudo-organic substances. It is widely rumored that Hari Seldon saw a real servitor in "The Time of Escape".But the source of this anecdote is not reliable.In Seldon's vast writings.No servitors are ever mentioned. but…… —— "Galaxy Encyclopedia"