I think the reaction is made made by the decider too, and we can only observe our reaction. And again. And again. How should i say, the decider lives a few seconds in the future, or the observer is held back by our brain, he lives a few seconds in the past. So to speak anyway. "We" are always just observing.

I wrote this post, thought about it, thought about what i thought about it, and so on. Untill the decider decided to press the post button.

Practically an infinite loop.