Quantum Wormholes
2 min readDec 25, 2024

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Although we experience the flow of time as going from the present to the future, reality is not actually constructed that way.

Our present moment is always constructed from the present to the past. Every present image of the universe is constructed by detecting light-like interactions that span different lengths through spacetime. Some interactions span a few nanoseconds and others span billions of lightyears, but the whole picture of the universe, along with its whole history, is constructed in this way every time, satisfying the constraints of the speed of light and other constraints related to the universal constants, conservation laws, entanglement, causality, and so on, along with the consistency constraints of the whole history of the universe for what happened up to that moment.

The present is the only thing that exists, in the form of actual interactions at the speed of light, but we should stop thinking of them as something that evolves from present to future, and more like tendencies that get reinforced or suppressed from past to present, depending on what happened throughout all of history.

The entire universe you experience (along with the brain patterns that let you infer future events) does not reside within the volume of your past light cone, but on the surface of your present light cone. Every single time.

So rather than "retrocausal," which implies that you have to go back in time and change something in order for an interaction to unfold, I'd rather say that the universe is "backward compatible," in the sense that whenever an interaction unfolds, all conditions and constraints were already in place for it to happen.

If you're still confused by this "backtracking" way of understanding events, interactions, evolution and time, you can read my other articles where I hope to make this much more clear:

https://medium.com/@quantumwormholes

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Quantum Wormholes
Quantum Wormholes

Written by Quantum Wormholes

Light speed holds the key to understand the universe

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