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2 Futures Can Explain Time's Mysterious Past
- Houshalter 12y agoIf this turns out to be true it would mean we live in a "logical" universe rather than a "causal" one which would be very surprising. That is a universe that strictly follows causation from one state to the next, vs a universe with no "starting state" and where any state in time can depend on both states in the "future" and "past" with cyclical relationships. http://lesswrong.com/lw/fok/causal_universes/ http://lesswrong.com/lw/fok/causal_universes/ >Our own universe does not appear to have Time-Turners, and does appear to have strictly local causality in which each variable can be computed strictly forward-in-time. >And I don't know why that's the case; but it's a likely-looking hint for anyone wondering what sort of universes can be real in the first place. >The collection of hypothetical mathematical thingies that can be described logically (in terms of relational rules with consistent solutions) looks vastly larger than the collection of causal universes with locally determined, acyclically ordered events. Most mathematical objects aren't like that. When you say, "We live in a causal universe", a universe that can be computed in-order using local and directional rules of determination, you're vastly narrowing down the possibilities relative to all of Math-space. >So it's rather suggestive that we find ourselves in a causal universe rather than a logical universe...