Time travel question

[Reaper79]

I've been thinking about causality for... a couple of minutes now, and generally people believe you must have cause to create an effect, but is this always the case?

 

Here's what I'm thinking:

 

B leads to C,which leads to A, which leads to B, circular.

 

B:

Mankind invents time travel, and decides to witness the "Big Bang", but he wants front row seats so he gets there a little early, too early and without a universe to contain him and his time-ship it explodes instantly in a Big Bang.

 

C

The Universe is created, and time and space evolve enough to allow the creation of life, earth and human beings.

 

A

A man sits his lab and says "I've done it! I've actually created a time machine" His team gather around him and ask, "Where.... when should we go first?"

 

Are there any examples of processes.... not unlike this in the know world? B->C->A->B

 

Oh and please don't critic my little fiction... I worked hard on that.

[Ten oz]

Self fulfilling prophecies happen all the time. First example, and perhaps a weak one, that comes to mind is George Zimmerman. He carried his gun around thinking he might need to protect himself one day. Got himself into a confrontation and killed someone under questionable circumstances. Now he carries his gun because he absolutely needs protection because millions are angry with him.

[MigL]

Causality violation is possible at the quantum level.

Delayed choice entanglement swapping is one such case/experiment.