Life has obliged him to remember so much useful knowledge that he has lost not only his history, but his whole original cargo of useless knowledge; history, languages, literatures, the higher mathematics, or what you will - are all gone. ↗
We know from biology that new forms of organisms simulate their primitive form as closely as possible at first, even though obliged to exist under changed internal and external conditions. ↗
When you work on a text of a lesser quality, as the interpreter or the delivery person, you are obliged to try to fill it out as you see so many people do in lesser work. ↗