…ll the time; it’s a huge part of my research agenda. But you have to be careful where you apply it. Soundness is a security guarantee, not a usability concern. What matters is if someone can write this, because then that someone can get around the security measures that people have placed their confidence in and do whatever they would like to do. In the case of soundness, it’s the malicious programmer you should be worried, not just you and your friends.