The article explains all of this, and a lot more. It's absolutely worth the read if you are interested in this stuff. This diagram shows some of the proposed

The article explains all of this, and a lot more. It's absolutely worth the read if you are interested in this stuff. This diagram shows some of the proposed anchoring systems. https://www.economist.com/img/b/1000/679/90/sites/default/files/20210724_STC112.png https://www.economist.com/img/b/1000/679/90/sites/default/fi...