What does it mean to violate causality?

A common justification for prohibiting many unusual phenomena such as faster than light travel is that if they were possible, causality would be violated. Let’s define causality as: You cannot change the past. Meaning that at any given moment t1, it is impossible to influence any event which took place at t0<t1.

Can you break causality?

The only way to violate causality is through some kind of delayed choice experiment or time travel to the past. In either case, the results will always be as described. Causality is not something that can be obeyed or violated like some law on the books. Causality is how we interpret our perceptions of the world.

What is the effect of causality?

Therefore, causal effect means that something has happened, or is happening, based on something that has occurred or is occurring. A simple way to remember the meaning of causal effect is: B happened because of A, and the outcome of B is strong or weak depending how much of or how well A worked.”

What are the laws of causality?

The law of causality basically states that “changes have causes”. This statement is both intuitive and controversial. I say it is intuitive because you operate on this assumption constantly.

Is causality an illusion?

Causal illusions occur when people misinterpret random patterns as evidence of a causal relationship. New research published in the British Journal of Psychology provides evidence that this illusion of causality is associated with belief in pseudoscience.

Does causality exist?

Yes. Causality is order by definition; we therefore know it exists because we know that not all observations are the same.

What are some examples of causality being violated?

Some examples of how causality can be violated: A device which can travel faster than light A device which can travel into the past Newcomb’s paradox

Is causality a law of Physics?

In other words, is causality a law of physics, and how much of physics would have to be rolled back and re-written if I built a time machine (it’s probably easier to say what physics there would be left)? There are some (in)famous paradoxes that arise if you are able to influence the past.

Does FTL cause causality violations?

The fact is, you won’t get any actual causality violations with FTL that way. The trouble comes if the two planets are moving away from each other. So, let’s say that your warp drive travels at ten times the speed of light.

Is there a cure for faster-than-light communication causing causality violations?

There is a “cure” for faster-than-light communication causing causality violations. There isn’t really a problem with signals going back in time, if they only go back in time somewhere else. For example,imagine there was a magic post office in the year 1500 that sent letters from Rome (Rome) to Tenochtitlan (Mexico City) and one week back in time.