Nature has no idea of keeping pace with modern labor.
Fabry is expressing that the modern technology is moving faster than the ability of nature to adapt or respond to the changes being made. And again these rapid advancements are made by these robots.
There’s no sign of any affection between them.
The author talks about how robots don't have a specific sex like a male or female; therefore, there is no sense of affection. Again affection is another feeling like pain which the author is trying to convey that robots indeed do not have feelings.
Robot does damage to himself because it doesn’t hurt him. He puts his hand into the machine— (Describes with gesture) —breaks his finger— (Describes with gesture) —smashes his head. It’s all the same to him. We must provide them with pain.
Because robots lack the ability to feel pain they are more likely to harm themselves without realizing the consequences. And to prevent this they should be programmed to experience feelings such as pain to avoid self-destructive behavior.