system
Given the following post, respond as if you're commenting on Reddit:
human
[Dune] Is it possible to bend time if you take enough spice?

The Guild Navigators took spice in order to bend space and create efficient interstellar travel. If they took enough spice, could they bend space and time and go time travelling?
gpt
That's not how spice works. The Guild Navigators could not bend space, that's not how they traveled. The Navigators took spice in order to expand their mental capacities to be able to make complex calculations and gain limited prescience which allowed for safe route calculations in interstellar travel. 

Basically spice was a substitute for navigational computers since AI more advanced than a simple calculator was banned.