Novikov self-consistency principle

In that sense, it would make the Novikov self-consistency principle unnecessary.

The Novikov self-consistency principle states that a time traveller would not be able to do so.

More elaboration on this view can be found in the Novikov self-consistency principle.

She also states the Novikov self-consistency principle, two decades before he formulated it.

The first aspect is similar to a real-world physics conjecture, the Novikov self-consistency principle.

Novikov formulated the Novikov self-consistency principle in the mid-1980s, an important contribution to the theory of time travel.

The Novikov self-consistency principle proposes that contradictory causal loops cannot form, but that consistent ones can.

Or that the time-traveler's personal knowledge of history already includes their future travels to their own experience of the past (for the Novikov self-consistency principle).

An alternative is to conjecture that, while time travel is possible, it never leads to paradoxes; this is the Novikov self-consistency principle.

In 1.1, the Novikov self-consistency principle asserts that the existence of a method of time travel constrains events to remain self-consistent.

Claims, arguments, or philosophical principles logically equivalent to the Novikov self-consistency principle have been published before Novikov's own publication.

For astrophysicist Igor Novikov's conjecture regarding time travel, see Novikov self-consistency principle.

The Novikov self-consistency principle and Kip S. Thorne expresses one view on how backwards time travel could be possible without a danger of paradoxes.

This could mean that the Novikov self-consistency principle does not actually place any constraints on systems outside of the region of spacetime where time travel is possible, only inside it.

But some scientists believe that paradoxes can be avoided, by appealing either to the Novikov self-consistency principle or to the notion of branching parallel universes (see the 'Paradoxes' section below).

However, some philosophers and scientists believe that time travel into the past need not be logically impossible provided that there is no possibility of changing the past, as suggested, for example, by the Novikov self-consistency principle.

In the last decades there have been proposed ways to possibly remove such paradoxes, either by invoking the Novikov self-consistency principle or through the idea of branching timelines in the context of the many-worlds interpretation.

Daniel Faraday is a strong proponent of the idea that "whatever happened, happened," or the Novikov self-consistency principle, that the events in the past cannot be changed because they always happened with the time travellers' presence.

The Novikov self-consistency principle can also result in an ontological paradox (also known as the knowledge or information paradox, or bootstrap paradox) where the very existence of some object or information is a time loop.

The Novikov self-consistency principle and calculations by Kip S. Thorne indicate that simple masses passing through time travel wormholes could never engender paradoxes-there are no initial conditions that lead to paradox once time travel is introduced.

The Novikov self-consistency principle proposes that the local laws of physics in a region of spacetime containing time travelers cannot be any different from the local laws of physics in any other region of spacetime.

If CTCs exist, their existence would seem to imply at least the theoretical possibility of time travel backwards in time, raising the spectre of the grandfather paradox, although the Novikov self-consistency principle seems to show that such paradoxes could be avoided.

Some philosophers answer the paradoxes by arguing that it might be the case that backwards time travel could be possible but that it would be impossible to actually change the past in any way, an idea similar to the proposed Novikov self-consistency principle in physics.

Another resolution, of which the Novikov self-consistency principle can be taken as an example, holds that if one were to travel back in time, the laws of nature (or other intervening cause) would simply forbid the traveller from doing anything that could later result in their time travel not occurring.

Time loop logic, coined by the roboticist and futurist Hans Moravec, is the name of a hypothetical system of computation that exploits the Novikov self-consistency principle to compute answers much faster than possible with the standard model of computational complexity using Turing machines.