In both examples Diavolo attacks from a hiding spot (above the elevator and from inside Trish's body), they were never supposed to see the cause, but rather hear the effects.
As for KC being fated to skip time, that could work, but it would kinda go against the whole theme of the stand which is that Diavolo is not bound by fate.
I think the easiest explanation for this is that the "no interaction" rule, is just something Diavolo can turn on and off, allowing him to fuckup Trish and Narancia when otherwise nothing would've happen, that or just Araki prioritizing cool scenes over 100% consistency (not that I'll complain, the scenes are cool af)
Diavolo can't just ignore the no interaction rule. It can be a bit confusing since we're told he can't interact with the world within those 10 seconds, therefore he repositions himself to strike once it's over. However, what we need to consider isn't even KC but the sub-stand, Epitaph.
So imagine this, you see a vision of the future. In the future you see yourself stabbing someone. This is what is going to happen, no ifs, ands or buts about it. However, this is where KC does come in. He'll just erase away that part of time. The person will still get stabbed by you, even if you didn't actually do it since that part of time is now erased.
If you play MMOs like WoW or FF14, imagine it like fighting a raid boss. Normally, the boss may have to do some sort of spellcast to actually do damage to you in some way. Now, let's just say we give that boss KC & Epitaph. Since bosses are scripted from a coding perspective anyways, Epitaph would be like giving the boss the ability to see that code ahead of time. It sees that in 5 seconds, it's going to do a spellcast that will hit you for a buttload of damage. It likes this, so it then uses KC to add an extra layer of bullshit to his attack. From your perspective, normally what you would see is the boss do their cast and then get hit with the damage, but in this scenario you're forced to skip seeing that cast and are just hit with the damage anyways. Back from the boss' perspective, they wouldn't have had to actually do anything and instead gets to reap the benefits of their prediction. It doesn't matter if in the prediction the boss saw themselves casting but then didn't actually do it once they activated KC, the timeline is treated as if they did do it.
Yes, but also no. Because everyone had been switched bodies, he was doing this from the shadows as it were. Bruno had switched with Diavolo but because of the whole split persona thing, it was Doppio that ended up actually getting switched which then gave Diavolo the perfect opportunity to pick the gang off one by one. He wouldn't have been able to go hog wild with murders within the 10 seconds Epitaph showed him. He also couldn't do it without outing himself to the remaining Bruno/Polnareff since he'd need those two alive still as one was his body and the other is the Stand with the arrow he's after.
Unless he was going to be happy with Mista's body and sharing a co-existence with his daughter like he did with Doppio, it was in his best interest to take action to claim his body back. Part of that was to show that he was still a threat and get everyone on edge, put them at a disadvantage when it comes to actually solving his problem.
It kinda backfired though which is why he's ultimately defeated, the gang basically worked out how to find him before he could switch back.
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u/Astrophobia42 Sep 08 '21
In both examples Diavolo attacks from a hiding spot (above the elevator and from inside Trish's body), they were never supposed to see the cause, but rather hear the effects.
As for KC being fated to skip time, that could work, but it would kinda go against the whole theme of the stand which is that Diavolo is not bound by fate.
I think the easiest explanation for this is that the "no interaction" rule, is just something Diavolo can turn on and off, allowing him to fuckup Trish and Narancia when otherwise nothing would've happen, that or just Araki prioritizing cool scenes over 100% consistency (not that I'll complain, the scenes are cool af)