Regarding the paragraph in which you mentioned the "contract".....Could it be feasible that Time per se, has its own built in protection for eliminating paradoxes?....If that was so, then therefore when the moment of Time-Travelling occurs, we are automatically transferred to a parallel universe where "changes" in that universe are acceptable, thus protecting our "own" universal-time-constants when we return back to it...
I understand that when the Mandella Effect takes place, it sort of makes the purpose of the parallel universe i mentioned above, redundant..
However, consider the possibility that "only" the people experiencing the Mandella Effect are aware that Time "has" actually allowed for a slight change within our own universal-time-constants....After watching the movie, The Adjustment Bureau, it forced me to think about this possibility.
Time is entropic and this becomes all about information very quickly. Time traveling requires overcoming aspects of the field that are literally associated with life destructive forces. These conduits need to be filled with light in order that a traversable pathway can be created to the destination.
It turns out that the higher dimensional concepts required to complete this task also embed the self protection mechanism. To create the light in the first place requires a guarantee from the traveling consciousness that it will fulfill certain obligations in the future.
I'll check out that movie, thanks!