system
Given the following post, respond as if you're commenting on Reddit:
human
[DUNE] If the only means of FTL is through the Spice, and the Spice can only be found on Arrakis, how did the first humans get to Arrakis?
gpt
Before the advent of spice using Navigators, faster than light travel (or space-folding) was not safe as one in ten ships that used space folding engine disappeared. The spice allows navigators to plot safe courses.