Note for myself:
"Time traveling is basically traveling. So you should have only one body. Yet of course there are multiple "yous" in the pass present and future. But only one you can be kept in one period. Generally, you travel to the far past before you were born or the far future after you already died. However, if you travel to a time when you are still around, there will be two yous. It's not rewinding, or jumping ahead. You're a version from the future coming back or vice versa. And because of that, there will be two yous. And that disrupts the order or balance of a time, cause it to tear apart. And space and time are rarely separate."