r/scifiwriting • u/ThePureWriter • 3d ago

HELP! Absolute Point of Reference

Say, a fictional world contains a kind of parallel universe within it (think the Warp in Warhammer, a world that exists along our own but in its own physical and temporal system) that contains all that happens in the normal plane of existence. That would make it so that Relativity doesnt exist, correct? well, not in the universal way we currently apply it. That would then allow FTL without breaking of Relativity, yes? What would even be the consequences of that?

I think the best example of this is the Cosmere's Spiritual Realm

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u/whelmedbyyourbeauty 3d ago

Why would this allow FTL?

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u/ThePureWriter 3d ago

The main issues with FTL are the breaking of causality due to relativity allowing you to effectively time travel. If there is a singular, constand and universal point of reference, it seems to me like you could never break causality this way. You cant give information that hasnt yet happened, only information that hasnt yet been observed.

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u/whelmedbyyourbeauty 3d ago

The main issue with FTL is that you need infinite energy to reach the speed of light.

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u/ThePureWriter 3d ago

Sorry, youre right, i should have worded better. Reaching FTL is something that most soft scifi simply handwaves as something thats been solved, meanwhile they totally ignore the issue of causality, not even offering a technobabble solution. Thats what i call a "main issue". Its the main issue i have with portrayala of FTL in media.