View attachment 2995
Sorry for bad handwriting
Plz do tell me if there is any mistake
I'm not quite following your logic but let's deal with the math.
1. 8*10^9 - [10^6] * 9 = Z+(10^6)
Solve:
8*10^9 = 8,000,000,000 (8 billion)
1*10^6 = 1,000,000 (1 million)
8,000,000,000 - 9,000,000 = 7,991,000,000 [7.991^10^9]
Z = 7.991*10^9 + 10^6 = 7.992*10^9
Check.
But why complicate a simple addition problem? It's 8 billion plus 1 million in one place and 1 million less somewhere else. It's a migration problem.
Imagine the impact of +2 billion people? I can - so can you. In 2010 the population was about 6 billion. Now, 12 years later it's 8 billion.
But why limit your example to 1 million. Why not all 8 billion people? Or better yet, an infinite number of people? If you have a world that has time travel to the past where they already exist (or will exist) it implies that an infinite number of people can travel there. That time travel enabled world literally has "forever" into the future to decide to travel to that particular past. Everyone can do it. They could even first go to millions of other "parallel" universes and convince all of their doppleganger selves to get on board the time train and travel to that one world together. And each one of those millions of dopplegangers can travel to millions of "parallel" worlds and invite yet billions more dopplegangers to climb aboard as well.
Fortunately there is no theory that supports time travel to real alternate worlds where your double exists. The closest is Many Worlds but as I said before you don't travel to those universes. Your decisions create infinite new universes that never existed before. The "you" on those worlds are not YOU. They are simply alternate outcomes to the actions you took.
You're not going to go into the affective past and kill Hitler to save the world. You should thank god that you can't. During World War II somewhere between 60 and 90 million people were killed directly by the war. Imagine that you killed Hitler, Mussolini, Stalin and Tojo, the four world leaders who started WWII. World War II never happens. Those 60-90 million survive many, many years after 1945. Our parents, grandparents and great grandparents have 60-90 million new competitors for their hands in marriage. Meeting "that special someone" in many if not most cases happens by chance. Being in the right time and place in a world where there are hundreds of distractions daily that can stop you from being in that place and time. They meet someone else. To this day billions of children would be born that never exist in the real scenario. Virtually none of us would exist. That's the real impact of traveling to the affective past. (The affective past is an area within your past light cone such that actions taken in the past can affect you in the present, i.e. a few seconds ago someone shot an arrow at you and now, a few seconds later, that arrow can seriously affect you health, safety and well being.