>>>In my reality, what Jesse does will not affect my reality.
>>False.
>OK. I'll bite. How can Jesse do something that will affect me?

You, I, and Jesse all share the exact same reality. What he does may not affect you (which you claimed and I agreed may be true), but that does not mean he does not share in your reality.

He may affect you by changing laws on how Minnesotan Dairy farmers can export there goods, which may make the cost of Milk in SLC to go up half a penny. If you buy milk once a week, after a year, that could affect you up to $.24. While that wouldn't be a big deal for you, you might put one less penny in the "take a penny give a penny" jar, which means, some little kid needs an extra cent to buy the Ice Cream cone he wanted and he can't. So as he's walking across the street to go to the Dairy Queen where the Ice cream is cheaper he gets hit by a car.

Our reality encompasses the known and unkown universe. Anything performed in that reality will have a lasting effect on the rest of the reality that we share.