[sdmike1]

The book and the film where written and developed cooperatively so both really ¯\_(ツ)_/¯ However, they are both based on clark's 1951 short story The Sentinel[0].

[0] https://en.wikipedia.org/wiki/The_Sentinel_(short_story)

[ac42]

Indeed, and to my feeble defense:

> The book was credited to Clarke alone.

TIL :)