Nice try comrade but i know clearly what i posted. Your problem perhaps may be that you rely mostly on sci-fi on the knowledge about time-travel. Or i may be using a concept you may not be familiar with. Time-travel not been well grounded in mainstream science is as a result of little or no experimental support, theoretically it has grounds and therefore for now it's still a philosophical concept. There are a lot of fantasies in sci-fi which may be misleading. I kinda understand what you are getting at (with regards to timelines) but it's closely related to another aspect of time-travel. However, i would not argue further as it would ruin the fun totally. Probably in a forthcoming article where i would reveal the answers, i would explain and we can argue.

However, there appears to be a sci-fi movie where something related to this riddle was used, maybe it may lead you to the answers, who knows. The movie is called "Tenet".