That strongly depends on your reference frame. As in, what system are you looking at? Where are you drawing your box? If your box is around the entire universe, then yes, every action is a reaction stemming from the big bang, with very few notable exceptions pertaining to black holes that I wont go into.
However, if your reference frame is a hand and a ball, then the hand pushing the ball is an original action, the ball moving its reaction.
Well, its kind of a matter of debate really on the black holes, and its in regard to the law of conservation of information. I’ll freely admit, we are getting to the edge of my understanding here, but essentially black holes very nature of being inescapable by anything means that information, once inside, is permanently lost.
The reason hawking radiation was such a big deal is that it found a way for this information to potentially be released into the universe once again. That radiation is actually a pair of “virtual particles” (which aren’t real particles, more a mathematical trick to describe complex interactions between different fields and their particles). One of the particles “pops in” to existence on the inside of the event horizon and one on the outside, thus separating the pair. One falls in, one escapes. But since they didn’t annihilate the energy that the now real particle has must come from the black hole, hence, the energy has escaped the black hole.
Now, is that “action” a reaction, or is it a brand new action with no inciting incident? I dont have an answer, and its up to speculation because hawking radiation may or may not even exist. But its our best guess.
That strongly depends on your reference frame. As in, what system are you looking at? Where are you drawing your box? If your box is around the entire universe, then yes, every action is a reaction stemming from the big bang, with very few notable exceptions pertaining to black holes that I wont go into.
However, if your reference frame is a hand and a ball, then the hand pushing the ball is an original action, the ball moving its reaction.
What if the ball was talking shit?
Or if the ball was thrown at them…
What do you mean about the black holes?
It’s also worth noting, I think, that the universe might be spatially infinite, which makes “box” a funny way of saying it.
Well, its kind of a matter of debate really on the black holes, and its in regard to the law of conservation of information. I’ll freely admit, we are getting to the edge of my understanding here, but essentially black holes very nature of being inescapable by anything means that information, once inside, is permanently lost.
The reason hawking radiation was such a big deal is that it found a way for this information to potentially be released into the universe once again. That radiation is actually a pair of “virtual particles” (which aren’t real particles, more a mathematical trick to describe complex interactions between different fields and their particles). One of the particles “pops in” to existence on the inside of the event horizon and one on the outside, thus separating the pair. One falls in, one escapes. But since they didn’t annihilate the energy that the now real particle has must come from the black hole, hence, the energy has escaped the black hole.
Now, is that “action” a reaction, or is it a brand new action with no inciting incident? I dont have an answer, and its up to speculation because hawking radiation may or may not even exist. But its our best guess.
The hand was guided by neurological impulse
Not if your chosen reference frame is a hand and a ball, as per the example
I mean aren’t you saying: “Something can happen without a cause if we just ignore the cause.”
I read ops question as about reality, not hypothetical universes that contain a hand that moves a without an arm or brain attached.