And while we're at it with this duplicate post, I'll use this as an opportunity to point out additional issues:

If each steps increase safety two times, 8 steps will increase it 256 times, which is good. Simple friendliness is plan B if mathematical FAI fails.

This isn't true. Probabilities may not be independent of each other. And it isn't even clear that all your steps even do increase safety.

I'm incidentally annoyed that despite your decision to repost this with slightly different formatting you have not fixed the grammar or spelling errors.