Here are some fun theories I’ve been looking at:
If the big bang was a singularity to which the universe will return, what is the point of animal instinct of survival? For those of you who have read ‘Sir Gawain and the Green Knight,’ this ties into the question of whether human reason, especially about chivalry and courage, laying one’s life on the line and imitating the martyrdom of Jesus, should override human instinct – the drives for sex, food, water, shelter, security. If the entire universe will end anyway and be recreated anew, why would the drive to survive matter? Even if humanity expanded out into the stars and was able to continue balancing its populace by expansion, what good would it do once the universe coalesced back into a singularity?
This led to another question: if the universe reverts to a singularity at the end of time, how does time work? Is it linear or circular? If it’s circular, how we account for continual change?
Which led me to think that, if time is circular, then it returns in an orbit bordering on the edge of the end of time, bounded by the beginning of time, traveling in spiraling orbital patterns around a central origin. If time was a 2d circle, repetitions would be much more obvious and predictable, however, as this is not the case, time might be spherical: ever traveling in orbit, but changing its degree around a certain axis, allowing for variation in the recurring events. Hence why history repeats itself, and yet the exact same phenomena never happen in the exact same place under the exact same context.
Now, if we were to view time as being linear, then the endpoints of this sphere – those at all the various parts of the surface area- would touch onto their own spheres, creating multiverses that connected like magnetic balls. There are then, in my mind, two interpretations of how these multiverses would connect – either in an ever expanding manner, or in a thoroughly connected one, like magnetic balls arranging into a shape. That being said, there are myriad points on the surface area of a sphere, and thus, following the science of fractals, various sizes of spherical universes would exist in the multiverse. In each case, there would be an infinite number of multiverses, as the fractals would become smaller and smaller in either case (and continually expand outward into more potentials of universal existence).
Now, returning to the pertinence of our universe: within each time-space sphere of universes, if time rearranged potential existences in one sphere, recurving on itself and not truly ending, then each sphere would have an infinite amount of time within itself, constantly flowing and transitioning from potential moment to potential moment.