Ok, so here's my thinking so far:
My crystal ball reveals a future in which Trump becomes president, so long as I am not led to view what the crystal ball reveals. However, if I do see through the crystal ball that Trump will become president, then this will lead me to a course of action that prevents Trump from becoming president.
This suggests to me that the crystal ball did not reveal to me the event that would inevitably happen, but rather the event that would happen if I was not led to view the event through the crystal ball. But then me being led to view the event though the crystal ball was something the crystal ball failed to "predict".
So I remain convinced that you cannot really know at any point in time how the future will unfold if you are going to be led to change that future. You can only have that knowledge [theoretically] if it is impossible to be led to change that future.
My crystal ball reveals a future in which Trump becomes president, so long as I am not led to view what the crystal ball reveals. However, if I do see through the crystal ball that Trump will become president, then this will lead me to a course of action that prevents Trump from becoming president.
This suggests to me that the crystal ball did not reveal to me the event that would inevitably happen, but rather the event that would happen if I was not led to view the event through the crystal ball. But then me being led to view the event though the crystal ball was something the crystal ball failed to "predict".
So I remain convinced that you cannot really know at any point in time how the future will unfold if you are going to be led to change that future. You can only have that knowledge [theoretically] if it is impossible to be led to change that future.
