screenshotted and bookmarked (if i didn’t have finals i would have looked into it immediately)type 8 civilization is crazy, mostly indeterminate and highly speculative, so you can use more creativity with that, and combine it with theoretical structures and ideas
you should research CTCs, hyperbolic einstein rosen bridges (do hella research on black and white holes, as well as gravitational time dilation and wormholes), dyson mega structures, halos, alderson disk and other ring like structures
and geology+other hypotheical biochemstry, i was doing research on that today https://en.wikipedia.org/wiki/Hypothetical_types_of_biochemistry
if i wasn’t forced into medicine by my parents maybe i would have had time for researching this and writing it
i am definitely including dyson spheres, this civilization will have taken up the energy of most of the stars in the universe already
do you just watch youtube videos to learn btw?