15. Why is halving 4 years circle and not 2 years. Is it related to the world cup 4 years interval?
I don't know where you got the world cup idea, and I don't know why you don't connect it with the US election interval?, with I think, the Satoshi vision is even closer for that, not on sports.
I didn't think about the US elections. What entered my mind as something which happens every 4 years was the world cup. Relating it to US elections, does halving happen somewhere before US elections or after?
Even though Satoshi is presumably using a different account and is somehow present with us in the forum. Do you believe he would be willing to find the time to respond to each of the 20 questions you have posted here?
Yes, I believe he would have the time to respond to me. Of course he has finished bitcoin creation and he is not so much busy that he won't have time to respond to these questions. Unless he has another project he is developing.