Why do you think we've lost it? You can still write self-modifying code today. You may need to change permissions on the pages if you have a system that doesn't allow both execution and writing at the same time, but that's easy.
Why do you think we've lost it? You can still write self-modifying code today. You may need to change permissions on the pages if you have a system that doesn't allow both execution and writing at the same time, but that's easy.