Page "Ship of Theseus" Paragraph 50

Modern fiction shows concern with potential problems of personal identity.

In the 1986 book Foundation and Earth by Isaac Asimov, the ancient robot R. Daneel Olivaw says that over the thousands of years of his existence, every part of him has been replaced several times, including his brain, which he has carefully redesigned six times, replacing it each time with a newly constructed brain having the positronic pathways containing his current memories and skills, along with free space for him to learn more and continue operating for longer.

The Hitchhiker's Guide to the Galaxy series by Douglas Adams makes continuing sport of classic paradoxes.

In the trilogy's fourth book So Long, and Thanks For All the Fish, Marvin the Paranoid Android says of himself: " Every part of me has been replaced at least fifty times ...".

In the sixth book of the series, character Trillian has had so many body parts and functions replaced by technology that she doubts she is still the same person, referring to her present self as New Trillian and the past as Old Trillian.