A preface to his answers and their limits

I'm thinking of answering now, but not everything. I'll be writing down historical records as they are (since bringing materials is absolutely forbidden, it will be from my memory). Please forgive some errors in my memory (precise figures, etc.). I won't answer things I can't remember. That's better than writing sloppy history. Also, there is a lot of information I'm not allowed to leak. For example, anything that could even slightly touch on making huge profits in stocks: × Whatever the reason for the question, I'll be the judge of that. Anything related to the demographic changes I touched on the other day: × There are many rules like this. What's not allowed is not allowed. Also, my answers will come at irregular times. I'm busy. But I'll try to answer by midnight as much as possible.