Looks like more explanation is needed... ( Don this is not about dementia, but I see how you might have thought that).
After you die, you won't be around to know that you can't remember anything that happened during your life.
But by running through the thought experiment, my idea was that we can recreate a portion of what the lack of knowing would be like. As the body dies our consciousness also disperses (dies), and we won't remember anything because there won't be a brain to remember. This thought experiment is to help step outside of our "business as usual" frame of mind which has trouble cognizing the state of death.
So here is again, what I wrote for the scenerio:
Set-up:
You must take a year-long vacation, but your memory of it will be erased, all your photos and notes to yourself will be lost or deleted, and anything you buy during that time will also be taken away at the end. In essence it will be as if it never happened, except for the people that you talked to during that time will still remember.
Question:
Given the above scenario, what do you do during that one year time?