What exactly is the difference between running time backwards on the shattered vase and creating a process that unshatters a vase while moving forward in time then in that analogy?before anyone else also says they call bullshit, i realised i should have edited the op to clarify it. basically, the process as outlined by the paper and described in the op would be akin to dropping a vase and shattering it, and then managing to reverse that process and refom the initial vase again out of the shattered fragments.
again, the actual paper has been linked in the op as well. it's still nowhere near TRUE & HONEST TIME TRAVEL but effectively managing to reverse entropy is quite remarkable.
I mean if I'm using Word and I hit the undo button, I've reverted the document to a prior state but no one would call it a step toward time travel.