It isn't Science Marches On or Zeerust, but a related trope about how "nobody thought of that": Once Thorby reaches Earth, he is identified by his footprints, since his fingerprints weren't on file. Nobody in 1957 had imagined DNA matching.
It isn't Science Marches On or Zeerust, but a related trope about how "nobody thought of that": Once Thorby reaches Earth, he is identified by his footprints, since his fingerprints weren't on file. Nobody in 1957 had imagined DNA matching.