Serutan
Eatibus Anythingibus
I don't really think it was a problem with visibility. A lot of books (even Clarke himself failed to foresee things more advanced than reel-to-reels in the 50's) have this same problem.
Not true. In The City and The Stars (1956), he conceived of computers that had
no moving parts, had solid state memories, and circuitry that could take read data
from non-volatile memory and convert it to a person, machine, or building.