delayed-choice

check out this wikipedia article:
http://en.wikipedia.org/wiki/Delayed_choice_quantum_eraser

it's quite interesting, i read this after reading an article in Discover about John Wheeler and his idea that our choices in the present affect the past and future.

DISCUSS!

>>1
How do I changed past?

and I thought the double slit experiment was a paradox

>>3
it's definitely intriguing, the ability to apparently change the outcome of an event that has already happened.

>>4
So you mean like you write something down, then rub it out and write something else and go "LOL I CHANGED HISTARY!!!1one"

>>5

no, more like, your mother goes out for groceries, she buys eggs and is on her way home, and the act of you observing her coming down the street changes those eggs to bacon.

>>6
no, more like, heisenburg's uncertainty principle and some student who likes to confuse dumbasses*

fix'd