Cardboard mulching is a great way to minimize the weeds in your garden! It does break down in a few years, but at least some (or most of it) gets sequestered into the ground.
re: mangrove forests, there's a company I'm following that is working on replanting them as part of a permaculture solution: https://regenerativeresources.co/
> For instance, consider an AI algorithm that automatically scans emails and blocks spam messages (many popular email providers use AI to filter out spam). A paraphrasing attack would involve rewording a spam email to slip past the AI filter while conveying the same message to the human recipient.
This has been happening already. At some point, I would get email titled something like "(3)_GIFT.CARD_sent_to_{ my@email.address }" and wonder why the spam filter didn't obviously recognize it as spam. But then it started happening less and less often.