I'm watching Star Trek: Discovery and the way the series plays with time travel through the Multiverse. The Buddhist concept of Karma and Rebirth only makes sense in a Multiverse. The good or evil you do in the present timeline could affect the lives you lead in other timelines in other dimensions of the Multiverse.
Several characters in the show 'die' but they come back, changed, psychologically. So there are multiple deaths, but no one dies absolutely. In a multiverse, you could 'die' countless times in different timelines, but you would also always be 'alive' in another timeline in another dimension of the Multiverse. This is akin to the Buddhist idea of multiple rebirths.
It is also akin to the Buddhist concept of the 'middle way', of neither eternalism nor nihilism. That death is not the absolute end of 'life' altogether. When a person dies, they do not 'live forever' in a heavenly realm (eternalism), nor are they extinguished completely (nihilism). Rather the person lives on in another existence in another timeline in another dimension of the Multiverse that is linked to this one. So the person is both 'dead' in this timeline and 'alive' in another timeline.
TBH, I always thought that Buddhism was an alien religion or philosophy or "knowledge" from another world or another time. I believe it was alien not only to Westerners, and alien to Asian cultures at the time, but alien to the people of northern India where the Buddha supposedly lived and taught. It might have come from the Gandhara region of Pakistan/Afghanistan (as I said in an earlier post), but perhaps it didn't originate there either. Perhaps it came from another world or another time.
Also, one of the early schools of Buddhism, the Sarvastivadans, taught that all dharmas, past, present and future, all exist at the same time. These Buddhist scholars argued this as a way to explain karma, how a past act affects the present or future. But it could also explain features of a Multiverse.
the future has been shown to affect the past (this is really hard to wrap my head around)
also Vaishista Muni (I believe) created a parallel universe by the power of his austerities, so that is canon in sanatana dharma
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