Re: Some FAQ you might find interested and add your question.
Op your question one and two still need more answers or more details on this people. You can't just tell the public that we should go and find out the answers from them again and the thread is FAQs. It is better you gather more information and tell us. And as others also said, this forum was created by Satoshi Nakamoto in 2009 and most of his threads or articles here in the forum, he made mentioned of we and I as the personal Pronoun. And that can means he was not alone in the development process.
I don't think Satoshi Nakamoto is old but will be at the age of 50+ now. And why I said so because bitcoin is a smart project and it needs smart brain to develop such project and not aged brain that can easily forget many things. And I also strongly believed that he is still alive mingling with us in another format because nobody in this world would create or develop a project like Bitcoin and abandoned it to another people who don't know anything about the root of the project. Bitcoin is to challenge the world economy to some extent so the developers can't just abandoned the invention like that. They are still among the living. Monitoring how the project is moving.
What I have wondered about way more frequently is how nobody has apparently been able to identify Satoshi in this day and age--it seems impossible that someone could disappear without a trace like he did, and I'm pretty sure at least one government would be very interested in finding him, and probably way more than one.
Maybe he spent the last decade in prison already, waiting to give up his private keys.... And that's my best-case scenario, in which he's still alive. Why else would anyone disappear like this after creating the biggest invention in finance since .... since sliced bread